This was posted 3 months 8 days ago, and might be an out-dated deal.

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[NSW, SA, QLD] 30kWh VoltX Neovolt Battery & 5kW Inverter $5920 Installed (Metro Areas) @ VoltX

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[NSW, SA, QLD] 30kWh VoltX Neovolt Battery & 5kW Inverter $5920 Installed (Metro Areas) @ VoltX
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31mop on 15/07/2025 - 13:57 voltxenergy.com.au (4436 clicks)
Last edited 01/08/2025 - 10:34 by 2 other users

At the risk of being flamed, I'm trying to work out if I should go ahead with this deal or not.

I am aware of VoltX products and they seem reasonable quality. I can't really find too much bad about them online.

The price seems incredibly cheap (which makes me a little nervous). I spoke to a consultant (overseas call centre) and they discounted it on the spot a further $500 without asking so $5420 after all the rebates.

Anyone else had any experience with these guys before I pull the pin?

I already have a decent solar system and I export 30kw a day roughly, and this comes with an inverter which they (I assume) divert my solar into these batteries.

Too good to be true?

Electrical & Electronics Solar Battery Solar Inverter Solar Rebate

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Comments

        • stopBeingMean on 18/07/2025 - 21:39

          Hi David @ VoltX
          I have previously paid a 10% deposit ($602) on the previous 30kwh deal $5420 plus $600 backup functionality ($6020).
          Then I noticed your ‘OFFER 1’ deal posted, so I upgraded it to this latest deal.
          My understanding is the total price for OFFER 1 is $6700. So I just need to pay $6098 upon installation, deduct my deposit. But as clarified with VoltX support today, they mentioned that I have pay $6700 upon installation, which doesn’t sound right to me?

          • AssociatedVoltX Energy @ VoltX Energy on 20/07/2025 - 14:26

            @stopBeingMean: @One2Share

            Thanks for sharing this and also taking up our Ozbargain offer!

            I can confirm: you'll only need to pay the remaining balance minus your original deposit. So for OFFER 1 at $6700, your final payment would be $6700 minus any deposit you paid. Unless of course there are any additional variations or upgrades added to your order.

            Rest assured, our accounts and finance team are across this, and they won't get it wrong. But in the unlikely event there's an issue on your invoice, just PM me directly and I'll sort it out for you.

            Cheers,
            David

            • stopBeingMean on 20/07/2025 - 15:22

              @VoltX Energy: Thanks David, thats helpful. Appreciate your response on Sunday 😀

              • stopBeingMean on 21/07/2025 - 17:12

                @stopBeingMean: Update: Support has provided a new quote stating the balance is AU$6,098.00, which has cleared my concern now. Thanks again David.

        • Greenith2 on 27/07/2025 - 01:44

          Hello

          Just started looking into a 50kw battery system and notice this deal from a week ago that had expired ($6300 option), is there any similar deals availble?

    • clartan2015 on 16/07/2025 - 14:50

      Question about stacking. I just signed up for 2x 5kw inverter and 30kwh batteries, does vertical stacking works for 2 batteries + inverter? Cheers

      • AssociatedVoltX Energy @ VoltX Energy on 16/07/2025 - 16:02
        +1

        Thanks so much for signing up with us, we really appreciate your business!

        Our updated mounting brackets are designed to support that exact configuration safely (2 batteries + inverter stacked vertically). Just make sure to flag it with the install team during your site check pre-install, and they'll assess the space and compliance clearances.

        Cheers,
        David
        VoltX Energy Team

        • clartan2015 on 16/07/2025 - 16:04

          nice! looking forward to that Oct install! cheers!

        • clartan2015 on 16/07/2025 - 22:29
          +1

          @VoltX Energy, another question. Ive been reading and is it true that to add another inverter you need 40kw battery so it’s balanced? It was never discussed/mentioned to me by the sales agent this morning when i signed up for 2x 5kw inverter and 30kwh batteries

          • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 11:14

            @clartan2015: @clartan2015

            Thank you so much for signing up with us!

            You're absolutely right, and thanks for raising this.

            Yes, at this stage, Neovolt systems require balanced battery configurations when using multiple parallel'd inverters, particularly in single-phase setups. That means:

            If you're using 2 x 5kW inverters, the system expects the batteries to be evenly distributed, typically 20kWh, or 40kWh total.

            There are ways to achieve unbalanced batteries in 3-phase systems, where you can split batteries and inverters across different phases, but this doesn’t apply to standard single-phase installs.

            Apologies that this wasn’t explained during your initial discussion, please reach out to our rep to review this. I have cascaded this information company-wide so whoever your rep is will be updated accordingly.

            Cheers,
            David

            • KRM123 on 17/07/2025 - 11:21
              +1

              @VoltX Energy: @VoltX Energy

              So 2 x 5kW inverters on single phase can't use 50kW of batteries, it would need to be a total of 40kW to receive the rebate (i.e 20kW on each inverter), as jumping up to 30kW each inverter would likely add huge cost as the federal rebate only covers 50kW of batteries.

            • clartan2015 on 17/07/2025 - 11:42

              @VoltX Energy: Thanks David. i should still be able to cancel my order yesterday and get the deposit fully refunded right?

              • AssociatedVoltX Energy @ VoltX Energy on 20/07/2025 - 14:31

                @clartan2015: @clartan2015

                Yes, absolutely as long as we haven't begun the installation process or attended your site, you're more than welcome to cancel your order and receive a full refund of your deposit.

                Cheers,
                David

            • clartan2015 on 17/07/2025 - 11:52

              @VoltX Energy: im on the phone with the sales rep and he is still insisting unbalanced is ok. can i DM you? or please DM me. thank you

        • 3dprintdeals on 21/07/2025 - 17:15

          when do they do this site check? are you referring to the photos we send?

          found the answers to a later response: https://www.ozbargain.com.au/comment/16743110/redir

      • keejoonc on 18/07/2025 - 09:46

        @clartan2015

        How much was the extra inverter?

        • clartan2015 on 18/07/2025 - 09:55

          $1500 extra

          • keejoonc on 18/07/2025 - 09:57

            @clartan2015: Thanks. I presume that was just adding the inverter to the existing 30kwh battery and 1 x inverter setup?

            Curious to find out what the price difference will be with 40kwh battery and 2 x inverters vs 50kwh battery and 1 x inverter.

          • emon on 31/07/2025 - 10:08

            @clartan2015: Was this for the AC Coupled Inverter or the Hybrid Inverter (SPH5K). Got a quote from a Rep today that was for 2 x Hybrid Inverter with a 50kW battery, where the extra inverter was quoted at $2400, not $1500. Should mention its for a single phase system

            • V2L on 31/07/2025 - 10:48

              @emon: I presume 1500 for another 5kw AC coupled inverter that is in the package - I've been told the hybrid inverter + parallel kit is 2300

    • chrisharry53 on 16/07/2025 - 14:56

      Thanks, answers my questions as did Ed when I called not long ago. Not big issues but Ed advised I will need to pay an extra $550 (I think it was) for a smart meter for the batteries as I have 3 phase power (this meter is separate to the one installed for the solar system I have) and $800 for 3 circuits for blackout backup. Also need a smoke detector installed if placing inside. He said he could waive travel charge to Newcastle NSW, took off $500 when I asked about what I read in the post and advised to act quick for October instal.

      • AssociatedVoltX Energy @ VoltX Energy on 16/07/2025 - 15:59
        +1

        You're most welcome and thanks for sharing this! Glad Ed from our team was able to walk you through the details.

        Cheers,
        David
        VoltX Energy Team

    • belmakov on 16/07/2025 - 15:22

      Hi David @VoltX Energy - can you do 10KW inverter instead of 5KW for 3 phase AC coupling

      • Sparky on 16/07/2025 - 16:20

        or do you offer a 5kW 3-phase inverter option?

        • AssociatedVoltX Energy @ VoltX Energy on 16/07/2025 - 16:38
          +1

          @Sparky

          Thanks for the question. At this stage, we don’t offer a 5kW 3-phase inverter option.

          If you're on 3-phase and want to stick with 5kW, we typically use a single-phase inverter paired with a 3-phase smart meter. Alternatively, we can explore options like dual 5kW inverters or a dedicated 10kW 3-phase model, depending on your setup and goals.

          • thestig on 18/07/2025 - 18:55

            @VoltX Energy: Hi David, I just signed up and was told just 2mins before the quote was sent that I can only have one 5kW inverter on a 3 phase house and 2 is not possible. Elma said you cannot provide 10kW at all for 3 phase. Is this correct?

            I went ahead hoping there is some mistake here that you can help me sort out as I'm concerned that 5kW is going to be a bottle neck for a 50kWh battery…

      • AssociatedVoltX Energy @ VoltX Energy on 16/07/2025 - 16:34
        +1

        @belmakov

        There are two solid options if you're looking to go beyond 5kW for 3-phase AC coupling:

        Dual 5kW inverters
        One inverter can be paired with one phase, and the second with another phase — this allows more balanced output and flexibility.

        10kW 3-phase inverter model
        We also offer a dedicated 10kW inverter designed specifically for 3-phase battery setups.

        Cheers,
        David
        VoltX Energy Team

        • chrisharry53 on 16/07/2025 - 17:52
          +1

          What is the extra cost for a second single phase inverter or a 10kw 3 phase inverter instead of the single 5kw one? I do have 3 phase power btw. I have ducted air that has 17.3kw capacity and would want to use as much stored power as possible. From what I understand, the inverter in the package would provide 5kw and the rest would have to come from the grid. Note - I am no techo. I gather 17.3 capacity is if a/c is running at full bore continuously as set to max heat/minimum cool and not cutting in and out?

          • 31mop on 16/07/2025 - 18:05

            @chrisharry53: No, put your model number into chatgtp and it will tell you how much you're pulling. An AC that size is probably pulling 5kw an hour.

            My 14kw is pulling 4.4kw an hour.

            • chrisharry53 on 16/07/2025 - 18:31

              @31mop: Thanks. Did that. 5 cooling and 4.6 heating.

              I assume this is if working properly, etc.

              So, with a 3 phase smart meter installed (which is required), it will pull 5kw an hour from the 3 batteries, up to 30kw if they are fully charged an a bleak rainy evening/night with no solar producing and assuming no other power being used?

              • 31mop on 16/07/2025 - 19:16

                @chrisharry53: Yeah, pretty much :)

                If you're running other things and you're drawing say 7kw total, 5kw will come from battery and 2 will come from the grid.

                I don't think batteries ever full discharge, so I'm taking a guess they won't go under 20% (people can correct me if I'm wrong). So you would get about 5 hours at full pace before the batteries run out (assuming they were full).

                If you haven't got air con on, and just running appliances etc, if the batteries were full, you're pulling nothing from the grid.

                I'd probably put my ducted on a reasonable heat, lower fan speed for a couple hours at night without feeling 'guilty'..

                Right now, when I put it on, it's costing a few dollars per night, which adds up quickly.

                • chrisharry53 on 16/07/2025 - 19:29

                  @31mop: Thanks. Since 27/6, with an informative Powershop supplier app, power has cost from $7 to $18 a day, average $10 and usage 26kw. Solar generation average of 21kw a day. My missus is a cold frog lol

          • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 10:39
            +2

            @chrisharry53: @chrisharry53

            To get accurate pricing on either option, I'd recommend reaching out to our team directly so they can quote based on your specific site setup and power goals.
            Just a note that the 10kW 3-phase system uses a different stacking configuration, where the batteries are stacked vertically, and the inverter sits at the top of the tower. This differs from the single-phase system, which uses a side-by-side or depth layout.

            Your 17.3kW ducted system refers to the heating or cooling capacity, not the actual power draw, which is generally lower. Just as the helpful community members pointed out, these systems draw less power, and furthermore typically cycle on/off (or ramp up and down if it has VSD (variable speed drive) and rarely run at full draw for long periods.

            Also worth noting: your home's thermal efficiency plays a huge role in how hard your AC needs to work. Things like:
            - Proper insulation
            - Sealed gaps around doors/windows, even bottom of skirting boards
            - Double glazing, shaded windows, or open / closed blinds
            - Zoning of the AC
            - Temperature sensor locations

            I've gone down this rabbit hole for my own home :D, there are so many factors to help run the AC more efficiently.

            Cheers,
            David
            VoltX Energy

            • chrisharry53 on 17/07/2025 - 15:21

              @VoltX Energy: I looked more into it and 5kw inverter will be fine. Our peak usage on a horrid night recently was a touch under 5kw an hour but generally on that day it was below that. Cheers

          • supersabroso on 15/08/2025 - 15:33
            +1

            @chrisharry53: Trust me, your 17.3kW air conditioner is definitely not drawing 17.3kW of power. I've got a 14kW ducted system and the manual says that it uses 4.96kW whilst cooling and 4.39kW whilst heating in total. The 17.3kW you're looking at is the thermal capacity of the air conditioner, the electrical draw will be around 30% of that or 5.2kW on average.

        • BusMan247 on 16/07/2025 - 18:12

          Hi David, i called up and spoke to the virtual assistant. Keen to lock something in asap. Thanks for fielding the questions. Can I confirm, if the unit is faulty during the warranty period, who handles fhat ?

          • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 10:43

            @BusMan247: Hi @BusMan247

            Thank you very much for considering purchasing through us, we really appreciate it!

            If the unit is faulty during the warranty period (or if any workmanship issues need resolving), VoltX Energy handles everything directly. That includes:
            - Troubleshooting and technical support.
            - Organising a technician visit if needed.
            - Coordinating any replacements or warranty claims with the manufacturer.

            We take full responsibility for after-sales service, so you won't be passed around or left chasing different contacts.

            Cheers,
            David
            VoltX Energy Team

            • BusMan247 on 17/07/2025 - 12:56

              @VoltX Energy: Excellent. Thanks.

            • BusMan247 on 18/07/2025 - 21:16

              @VoltX Energy: Hi David, i caller up yesterday. Spoke woth Francis. Went throuvha 60 minute call. Got a quote sent to me, and was told he would call me today. Never called. Tried calling mysefl at 3pm, couldnt get through. Where does this leave me ?

    • bunk on 16/07/2025 - 16:26
      +1

      Thanks David for the info.

      I have just spoken to a sales rep. As I needed solar panels included with the quote.

      The sales rep offered:
      6.6 kW solar panels for $3k more
      9.6 kW solar panels for $4k more

      Is this the price on what everyone else is receiving?
      I was told, that the one inverter does everything.

      I’m not too sure, if it is worth going 9.6 kW solar panels since the inverter is at 5 kW, seems like a waste to go for more solar if it can’t be converted.

      David, please do an ozbargain discount :)

      • mirovich on 16/07/2025 - 16:56

        Thats quite expensive for panels supply and install.

      • AssociatedVoltX Energy @ VoltX Energy on 16/07/2025 - 17:13
        +1

        @bunk
        Thanks for reaching out and for speaking with the team!

        Those prices for the 6.6kW and 9.6kW solar add-ons are consistent with what we've been offering others. It's based on Tier 1 panels, CEC-listed gear, and full compliance.

        I'm really glad you asked about the 5kW inverter and wasted production from solar…. this touches on something I didn't cover in my original comment, and it's an important point:
        * Solar panels are often over-sized relative to the inverter (within CEC guidelines) to maximise production during low light or cloudy conditions.
        * So even with a 5kW inverter, having more than 5kW of panels helps stretch your generation curve and fill your battery more consistently.
        * Also - and this is important - your solar panels can charge the battery and power your home at the same time.
        So if your 9.6kW solar system is producing close to full output, it could (in theory) send around 4.6kW to charge the battery and 4.6kW to power your home.
        Actual output will vary depending on sunlight and system conditions, but the key point is: it's not either/or …. the system can do both charging batteries and supply power to the home, in parallel.

        So it’s not wasted, especially if you’re looking to make the most of self-consumption.

        :) regarding a discount, this is noted. I will try my best to get something across the line :)

        Cheers,
        David
        VoltX Energy Team

        • chillybags on 16/07/2025 - 23:39
          +2

          Hi David,
          I have an existing 6.6kw solar system (with a fronius primo inverter non hybrid) that’s north facing. Can I add on additional 6.6kw solar system facing east or west and have the 5kw inverters hooked up together or would I need to get the 10kw inverter that you offer? Would adding 9.6kw on top of existing 6.6kw be overkill? The existing cells are only 5 years old but any issues mixing and matching a new setup with older arrays?

          • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 12:08

            @chillybags: Hi @chillybags

            This is a great question. This scenario is very common that applies to a lot of homes looking to expand their solar and add a battery system.

            The extra solar, specially a larger array east and west is in most instances is not overkill, specially when you're instroducing a battery system.

            Here's one possible setup:
            - Your existing north-facing 6.6kW solar array continues powering your home and feeding into your existing Fronius Primo inverter
            - The new 9.6kW system (e.g. east/west) is set up as a separate system, connected to the battery inverter
            - This allows your battery to charge independently while still making full use of your existing panels

            Your 5-year-old panels are still relatively new in solar terms. We always aim to retain and integrate them where possible. Mixing old and new arrays isn't a problem as long as they're managed via separate MPPTs or inverters.

            That said, this isn;t a final recommendation. Every home is a bit different, and the ideal setup depends on your usage profile, roof layout, and goals.

            Our approach is to always aim for minimal disruptions and maximum returns.

            Cheers,
            David

        • El-Rhi on 17/07/2025 - 07:27

          Hi David, regarding the solar panels, is it possible to configure between 6.6kW and 9.6kW? Also, can you provide details on the types of panels that are available? The person I spoke with the other day couldn’t give any details on the panels.

          • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 12:34

            @El-Rhi: Hi @El-Rhi

            Best to reach out to us directly for a quote, the final system size will depend on your roof space and property layout.

            Our team will assess your site and recommend the most suitable system size.

            We use Tier 1 branded solar panels (such as Jinko, Trina, LONGi, etc.), but the specific brand included in your proposal will depend on supply availability and your location at the time of installation.

            So I won't be able to confirm the exact brand here, but if you have a specific request, feel free to let our team know during quoting and we'll do our best to accommodate it.

            Cheers,
            David

            • El-Rhi on 17/07/2025 - 14:41
              +1

              @VoltX Energy: Thanks David, appreciate the response. Do you use your own installers for the panels as well, or you subcontract this out?

              • AssociatedVoltX Energy @ VoltX Energy on 18/07/2025 - 11:28

                @El-Rhi: @El-Rhi

                We actually use a mix of internal and external installation teams.

                Our own in-house teams are on the field for many locations, and we also work with a network of vetted, CEC-accredited subcontractors where needed.

                Cheers,
                David

        • thestig on 18/07/2025 - 11:21

          Hi David, did you get anything across the line regarding a discount on the panels installed at the same time?

          • AssociatedVoltX Energy @ VoltX Energy on 18/07/2025 - 11:31

            @thestig: Hi @thestig

            Thanks for checking in. Unfortunately, not at this stage. We've had to keep the current promotion simple and focused, just to manage the volume and keep things consistent across the board.

            If anything changes or we’re able to bundle in a panel discount down the track, I'll definitely share it here.

            Cheers,
            David

    • furyou on 17/07/2025 - 00:21

      Can you explain:
      Backup functionality is available for $600, and this includes the components and re-wiring required for 2 circuits. Typically, this would be one power circuit (that includes a fridge) and a light circuit.

      My switchboard has 10 fuses (some linked), so is that 10 circuits? I would have thought the battery just feeds the house and not specific lines.

      I have a fronius symo 10kw 3 phase. I don't need your inverter right?

      • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 12:44

        Hi @furyou

        Great questions, and yes, your general understanding of how the battery works is spot on. During normal use, the battery powers your whole house (up to the inverter's capacity), and anything beyond that just pulls from the grid. So you're not limited to specific lines or circuits during regular operation.

        Now, backup functionality during a blackout is a bit more complex. For backup to work properly, we actually need to rewire specific circuits in your switchboard. That's why we include 2 circuits in the standard setup, typically one power circuit (which includes your fridge) and one light circuit.

        The reason we limit it to two is to avoid overloading the inverter during a blackout. For example, if you're not home and there's a power cut, but multiple high-draw appliances are still on, the inverter could trip. And if everything's backed up, that means even your fridge could go off. So we keep it lean to make sure the critical stuff stays running reliably.

        Also, we don't recommend running air conditioning through the backup, it's usually too heavy a load in outage scenarios.

        In terms of your Fronius Symo 10kW inverter, it's a solid unit, but it's not compatible with Neovolt batteries. We'd install the battery system separately, alongside your existing solar. It won't interfere with your Fronius. They'll just run in parallel.

        Cheers,
        David

        • furyou on 17/07/2025 - 15:47

          OK got it. Battery helps the whole house while stuff works. But limited to 5kW. If my AC is 3 phase then it takes from all phases, so the 5kW may not help with bumps in usage?

          In blackout only 2 circuits are fed. May be an issue as I said switchboard has 10 fuses. Lights are on at least 2 diff ones, not sure what the rest art.

          What's the extra cost of a larger and/or 3 phase inverter?

          • AssociatedVoltX Energy @ VoltX Energy on 18/07/2025 - 11:36

            @furyou: @furyou

            Yes, that’s correct — the battery supports the whole house during normal use, but is limited to the inverter’s output capacity (e.g. 5kW).

            And yes, during a blackout, the system only feeds 2 pre-selected circuits so if your lights are split across multiple fuses or you have essential appliances on separate ones, we can plan accordingly.
            That said, there are solutions for this and every home is a little different.

            If you're considering a larger or 3-phase inverter, the best thing to do is to reach out to our team here for a tailored quote:
            https://voltxenergy.com.au/pages/australian-federal-home-bat…

            They will assess your property and usage profile to guide the best setup.

            Cheers,
            David

    • keejoonc on 17/07/2025 - 10:36

      Hi David, @VoltX Energy

      I currently have an existing 6.6kw solar with Growatt MIN 5000 TL-X inverter.

      Can you please advise if this system would be suitable for use with the existing equipment? Is 50kwh pack way overkill given how small my solar system is?

      If you could advise any issues or compromises with the above setup, it would be much appreciated.

      Thanks.

      • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 12:48
        +2

        @keejoonc

        Your existing 6.6kW solar system with a Growatt MIN 5000TL-X inverter is perfectly fine to leave as-is. We'd simply install the Neovolt battery system as an independent setup. It will run in parallel with your current solar, meaning there's no need to remove or replace anything.

        About the 50kWh battery, no, it's not necessarily “overkill”, even with a smaller solar system. These are some of the reasons why:
        - The federal rebate only applies once per household, so by going larger upfront, you're maximising your one-time rebate savings
        - Even if you don't fill the battery from solar every day, it can be used to charge during off-peak grid times (e.g. 11am–2pm or overnight)
        - The extra storage helps during overcast periods, higher winter usage, or future changes like adding an EV or expanding your solar later

        No major compromises the setup is flexible, and many of our customers use the 50kWh system this way, especially if they're thinking long-term.

        Cheers,
        David

    • JayBholeNath on 17/07/2025 - 10:37

      @VoltX Energy
      Hi David,

      If Neovolt disappears after a few years, will Voltx Energy still provide warranty support. If yes, how?

      Also, I am a fronline worker, how much discount I can get and stack it on top?

      And I am in QLD(Energex), I would like to buy 50kw battery and 10kw inverter but the rep said it is not allowed by Energex, can you please confirm?

      • AssociatedVoltX Energy @ VoltX Energy on 17/07/2025 - 13:03
        +1

        Hi @JayBholeNath

        Totally fair concern, specially with warranty periods being as long as they are.

        1. What happens if Neovolt disappears after a few years?
          Very unlikely. The parent company, Bytewatt, has been supplying energy storage products to the Australian market for over a decade.
          That said, even in the unlikely event that Neovolt were to disappear, VoltX Energy would still handle all warranty and support. This isn't an exception, it's something we formally commit to as the retailer and installer, and it's also our legal obligation under the Australian Consumer Law.
          Of course, there are always edge cases, like if certain parts stop being manufactured in the future… but even then, there are always contingencies and workarounds. We've handled legacy support across many product lines over the years and we take that responsibility seriously. Our support and field operations team is set up to handle all concerns.

        2. Regarding stacked discounts:
          At this stage, our OzBargain promotional offer above is already fully discounted, and we're not able to stack additional discounts on top. These promos are fixed-price and have maxed out all available room for discounts.

        You are aboslutely correct on the issue with the limitation with the distributor in QLD. My apologies, and my apologies for not pointing that out earlier, as rules can vary between states.

        Hope this helps.

        Cheers,
        David

    • Rafski on 18/07/2025 - 14:02

      @VoltX Energy
      Hi David,

      What's the max charge rate? Does the 10KW option have a higher max charge rate?

      Can it be setup so that it just charges from solar most of the time, then between 11am and 2pm charges from the grid at it's max rate (my electricity plan has free usage between that time)?

      Thank you.

    • chrisharry53 on 18/07/2025 - 21:54

      Hi, so who got them please? I can’t see anything. “ P.S. To say thanks for all the insights and discussion, I’ll be sending a free VoltX 5,000mAh Power Bank(voltx.com.au) to 5 top contributors in this overall post.
      I will announce them here on Thursday, 24th July at 3PM (AEST).”

    • Trillian on 26/07/2025 - 17:55

      Still waiting for photos of stacked batteries! Thanks!

  • Sparky on 16/07/2025 - 16:19

    Any recommendations for a good battery payback period calculator?

    • 3dprintdeals on 17/07/2025 - 18:56

      Pur your nmi data into solar quotes tool

  • stopBeingMean on 16/07/2025 - 17:07
    +2

    I paid 10% deposit as well.
    Price is $6020 with $500 discount (mentioned this post) with blackout function ($600).
    Was advised deposit is refundable till installation date.
    Installation timeline: October

    Hope it goes well.

    • chrisharry53 on 16/07/2025 - 18:10

      The contract has conditions for a refund of the deposit. Change of mind isn’t included. See clause 8. If you find otherwise, let me know please.

      • stopBeingMean on 16/07/2025 - 19:49

        Agreed with you as stated on the contract.

        In the sales rep's email, it contains "*The 10% deposit, if paid, is fully refundable within a 10-business-day cooling-off period pre-installation."

        Chatgpt:

        That sentence means:

        If you pay a 10% deposit, you’re not locked in immediately.

        You have a cooling-off period of 10 business days before the installation begins.

        During that cooling-off period, you can cancel for any reason.

        If you cancel within those 10 business days, you’ll get your full 10% deposit refunded.

        Key points:

        “Pre-installation” means this only applies before any installation work starts.

        “Business days” exclude weekends and public holidays.

        So it’s a way to protect you from being stuck if you change your mind soon after paying the deposit.

        • chrisharry53 on 16/07/2025 - 19:57
          +1

          Yep, standard 10 day cooling off period. Cheers

        • clartan2015 on 17/07/2025 - 11:27

          after the new promo posted for 50kwh, im thinking of cancelling my order yesterday but i could not find any cooling off period in the sales rep email, nor in the contract O_O

          • Sparky on 17/07/2025 - 11:36
            +1

            @clartan2015: @clartan2015 where did you see this new deal?

            • clartan2015 on 17/07/2025 - 12:03
              +1

              @Sparky: on this same page/topic. search this page for "Single-phase VoltX Neovolt 50kWh system"

  • lawcb on 16/07/2025 - 22:18

    How much to install with a 3 phase power?

    • chrisharry53 on 17/07/2025 - 08:03

      $550 extra for a smart meter for the batteries.

  • KRM123 on 17/07/2025 - 11:38

    @VoltX Energy
    Hi David,

    Ozbargain deal sounds good. I think 5kWh batteries paired with a 5kW inverter might be a bit undersized though, so you’d need around 10 hours of solar production at full output to fully charge them. That said, if you're on one of the low-cost plans offering 8c/kWh overnight, you could top up the batteries at night and then use that cheaper electricity during the day or export it back to the grid during peak times via Amber or similar services.

    In my case, I received a quote that included two 5kW inverters to run on my single-phase setup, aiming to make full use of my 13.3kW solar / 10kW inverter system. However, this added a fair bit to the cost. The quote included a dynamic control unit at $1,100 and an additional inverter at $1,800, so a total of $2,900 extra.

    Do you know if the dynamic control unit is always required when adding a second inverter? Is it primarily for export limiting on single-phase systems?

    Also, are there any plans to release a 10kW inverter for single phase homes? That would simplify installations like mine by avoiding the need for two units and would help reduce overall system costs.

    For backup, i assume with the two circuits, most are going to use 1 circuit to cover the fridge, and one for lights? Is there a way to add additional backup circuits to cover aircon as well?

    • AssociatedVoltX Energy @ VoltX Energy on 18/07/2025 - 12:06

      Hi @KRM123

      Thanks for sharing your feedback regarding limitations of a single 5kW inverter. It's something we talk through often with customers depending on their setup.

      A 5kW inverter will charge the battery at a maximum of 5kW, so yes, in theory it would take around 10 hours of continuous solar to fully charge a 50kWh system, but in practice, there are a few ways this still works well:
      - Time-of-day grid charging (if available in your area — e.g. off-peak or overnight rates around 8c/kWh)
      - Solar spillover during the day that would otherwise be exported
      - Or, less solar production on cloudy days, you benefit from having extra stored power.
      - Offsetting overnight usage or evening loads like cooking, heating, etc.
      - If you take backup functionality, and if you are in a blackout prone area, extra batteries will keep you powered for a longer period, potentially days vs hours (we had long

      It's true that for most households 20–30kWh is sufficient, especially when you're using it to shave peaks and cover evening use. In these cases, a 5kW inverter may be enough for daily charging and discharge patterns. The benefit of the extra batteries will then be as per the above points.

      Also, with the federal rebate and current pricing, going up to 50kWh is often only a small step up in cost.

      Now, if you have a larger home and/or consistently high usage, then yes running multiple inverters (like your 2x 5kW setup) or moving to a 3-phase solution makes a lot of sense. It gives you more power in and out at any time and helps balance loads better.

      Regarding your question on the dynamic control unit, this depends on your energy distributor's rules, we would have to comment on this with an inquiry with our team.

      As for a 10kW single-phase inverter, this is not in the roadmap.

      Youre spot on about the backup circuits we usually recommend:
      - 1 power circuit for the fridge and basic appliances
      - 1 light circuit for essential lighting

      Technically, more circuits can be added, but it depends on the inverter’s capacity and what loads you’re hoping to run during a blackout. We don’t usually recommend backing up things like air conditioning, since they draw a lot and risk tripping the system during outages.

      Cheers,
      David

  • fresh927 on 17/07/2025 - 11:51
    +3

    @VoltX Energy
    Hi David
    Tried to PM you but seems to be disabled?
    I called the call centre and they didnt seem to know about the ozbargain discount deal mentioned above.
    Like a couple of other people have mentioned being limited to 5kw inverter does limit how much of the 50kwh battery can be used and how quickly it could be charged - if the batteries need to be evenly distributed for a dual inverter set up would it be possible to get a price for say 40kw of battery with 2x 5kw inverters for single phase?
    Thanks

    • 3dprintdeals on 17/07/2025 - 13:57
      +1

      also interested and thinking the same.

    • Yugidce112 on 17/07/2025 - 14:11
      +1

      I have an 8.8kw solar with an 8kw inverter and considering my options. I'm a noob in all this and so I'm hesitant to go for just 1x 5kw inverter and i would be interested to know about that same l config of 40kw battery with 2x 5kw inverter single phase with option of backup power supply. Thanks

  • JayBholeNath on 17/07/2025 - 16:24

    I have paid the 10% deposit for the Ozbargain special Offer 2; let's see how it goes.

  • El-Rhi on 17/07/2025 - 17:06

    For those putting orders through, make sure you take advantage of their referral program for an extra $200 off

    • chrisharry53 on 17/07/2025 - 18:39

      You can get $500 off over the phone. Doubt you would get $200 off as well for being referred.

      • El-Rhi on 17/07/2025 - 20:13

        Worked for me

  • lawcb on 17/07/2025 - 17:39

    Can we stack up the NSW battery rebate for VPP?

    • 3dprintdeals on 17/07/2025 - 18:04

      hasn't that ended

      • lawcb on 17/07/2025 - 19:30

        Can be stackable with the federal rebate for battery connected to a VPP.
        https://www.energy.nsw.gov.au/households/rebates-grants-and-…

        • 3dprintdeals on 17/07/2025 - 19:55

          Max 28kw batteries though?

          • 3dprintdeals on 17/07/2025 - 21:54

            @3dprintdeals: The upfront incentive you receive depends on the usable capacity of the battery in kilowatt-hours (kWh). Larger batteries will receive a larger incentive.

            The incentive amounts you can receive are:

            between $400 and $550 for a 10 kWh battery
            between $1,000 and 1,500 for a 27 kWh battery.

            • postman on 18/07/2025 - 07:12

              @3dprintdeals: It has to be under 28kWh to be eligible, I believe.

              • 3dprintdeals on 18/07/2025 - 07:51

                @postman: Yeah so these are 30kw systems and not eligible for VPP rebate then

    • supersabroso on 20/08/2025 - 17:39

      Nope, not stackable as this deal is 28.8kWh, it's only for batteries with usable capacities under 28kWh or over 2kWh. If only there was a way to block off 0.9kWh of usable capacity, that would make this deal $1500 cheaper.

  • timochy on 17/07/2025 - 17:39
    +1

    Currently have a 13kw system
    Is this considered an “upgrade” as per the t&c’s of the rebate.
    Im considering the 50kw system

    “You’re installing a new battery system for the first time at your property, or you’re adding at least 5 kWh of capacity to an existing system that hasn’t already received this rebate.
    The total battery capacity (new or upgraded) must fall between 5 kWh and 100 kWh. “

  • Blackpaw on 17/07/2025 - 18:14

    @VoltX Energy

    Gah kicking myself, Oct last year I paid $12,000 for an AC Coupled NeoVolt Inverter + 2 * 10kwH batteries when you can get more than double that now for half the price.

    Any deals for existing customers? Wouldn't mind a couple of extra batteries and maybe an extra/upgraded inverter.

    Thanks.

  • 3dprintdeals on 17/07/2025 - 19:00

    How close can the batteries be side by side?

  • netgx on 17/07/2025 - 19:03
    +1

    Also interested in upgrading my current system.

    Is it possible to have 3x5kW inverters each paired with 20kW of batteries.

    For example
    phase A 5kW inverter + 20kW of batteries
    Phase B 5kW inverter + 20kW of batteries
    Phase C 5kW inverter + 20kW of batteries

    would this give a combined charge/discharge of approx 15kW and battery capacity of 60kW?

    Lastly are the new mounting kits able to stack the blue 10.1P vertically. I’d love to have 2 batteries and the inverter all in one vertical stack.

    If the above is possible, how do I go about getting a quote. I currently have installed a 5kW + 20kW of batteries but any time I reach out to sales, they say I can’t have multiple inverters. I’m on three phase Aus grid supply.

  • rhino86 on 17/07/2025 - 19:14
    -2

    Some long term considerations to think about. You screen obsessed junkies.

    1: Thunder and lightning storms.
    Batteries are subject to odd discharges or failure them when lightning strikes nearby, not close by close enough. What batteries where nearby in late December 2024 during a fierce thunder and lightning storm. Two lead acid in vehicles were fine one day, next day needing charging after the storm. One lithium-ion 56v battery next to the PV inverter. Flat. Never seen this before, has not occurred since. Also stuff was blown around in the wind gusts in June 2025.

    2: Battery emissions.
    All batteries emit gases into the air, hence the rules for placement. Something to consider when the wind carries around the house. Beware if you have any respiratory acute to ongoing issues. When its hot, yeah man 43 degrees in the shade, those batteries are going to be subject to excess external heat and humidity above 80% in SEQLD. Batteries will give off heat, EM fields, gases. Some extra shielding and ventilation may be required down the track post install.

    3: Ground movement:
    Ensure there sufficient cable length provided pre-install. A few degrees movement can leave cables stretched after 2-3 years once the concrete slab has shifted, or tiles or whatever you select for the foundation and base. Clay soils are subject to massive movement come the wet we are in, compared to the dry 2011-2019.
    Secure fittings may wiggle out, what was deemed good enough on day of install. May need repairs before failure.

    4: Inferior hardware:
    It is an external installation, yet time and time again electricians do not use tried and proven hardware, which ends up corroding. Staining the exterior of your house, eventually. Or completely failing and you end up paying again to have it repaired/ replaced.
    Or they use plastic plugs to secure hardware in wood or masonry which end up cracking, splitting and the bolt or screw wiggles out.
    Ensure the correct cable core and sheath specifications are used on the install day. Paperwork printed or digital does not always match what was actually installed. Are they UV stabilized, colour fast, coz cheap stuff will show quickly 1-2 years post install.

    5: Clouds, too many clouds.
    Since 2008 or really since the 1970's, daily weather subtlety has been changing.
    Solar PV systems have not been doing well, same with the bees due to more clouds, more light rain. This year 2025 Jan-June in SEQLD about 2 days out of a fortnight have been sunny or mostly sunny, the rest is Brittan weather, dreary and dull, rain yeah, rain nah, rain maybe.
    Rain can strip paint faster, more frequent and prolonged humidity is corrosion best friend.

    6: 5KW is not enough,
    Get your dual inverter quote, 2x 10KW. By the time summer comes around, how many A/C's do you have, 1,2,3,4,5 at the house….. Plus the ovens, air fryers, welder, distiller, etc.
    Know that PV systems are going to struggle to charge 30kw 50kw batteries systems if your at the house using most of electric power during the day. It might be better to consider 3x inverters instead of a 50kw system. And other types of generators. Solar PV is part of the story. No one has the remaining parts of the story sorted to disconnect the grid.

    7: Single phase might not be enough.
    Look you might not think you need three phase, but considering it might not cost much more to get it done sooner than later. Opens more benefits for what you are trying to achieve by storing power, generating power, using power. Speak to an qualified electrician who is in the know of the benefits over single phase electrical battery storage and generating systems.

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