This was posted 3 years 1 month 3 days ago, and might be an out-dated deal.

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Kasan 100Ah 12V Lithium Battery with LCD Screen Monitor $390.98 Delivered @ Rollingcart

61
Kasan 100Ah 12V Lithium Battery with LCD Screen Monitor $390.98 Delivered @ Rollingcart
Go to Deal
AssociatedLjonathanxing17 on 20/03/2021 - 21:26 rollingcart.com.au (955 clicks)
Last edited 23/03/2021 - 05:30 by 1 other user
ROLLING20OFF

RollingCart.com.au listed Kasan 12V Lithium Battery for $410.98 with afterpay, and $20off for storewide items. Good deal! Should go great with 3 years warranty.

Features:

Waterproof heavy-duty case
Capacity voltage LCD display
Fits most battery boxes
Maintenance Free, Non-Spill
Overcharge/discharge protection
Heavy-duty Removable M8 Bolt Battery terminals
Built-in battery management system for safety protection
Mobile with carrying handles very easy to lift and move around
Battery management system enclosed, no extra wiring needed
Perfect replacement or upgrade for a traditional lead-acid battery
Built with LiFePO4 battery cells that are engineered to deliver superior performance & longevity

Applications:

Solar system + Wind Power system
Emergency lighting equipment
Fire alarm and security system
Telecommunication equipment
Electric equipment and telemeter equipment
Light equipment
Portable power tools measuring and medical equipment
Wireless lawn movers vacuum cleaner
Toys and consumer electronics
Portable video camera portable personal computer
Camper Trailer Caravan Camping Truck Bus RV etc.
Caution:
Recharge each battery individually before parallel connection.

This is part of Afterpay Day sale for 2021
Electrical & Electronics 100Ah 12V Afterpay Day Kasan LiFePO4 Rechargeable Battery

Related Stores

RollingCart
RollingCart

closed Comments

  • Mr Icarus on 20/03/2021 - 21:56
    +21

    I see you've listed as associated, and that the price has convinced you to buy them for your personal use… BUT

    It seems more than a little coincidental that a user with a very similar name (to your username) also sells and promotes these on Facebook market place. (same website promoted)

    website has no details on a physical store or location or even a contact number / email, just a Web form.

    Not saying you aren't selling an honest product just seems a little.. Odd.

    There are lots of shill sellers of lithium, so I hope you see why I'm being a little cautious with this post.

    • UncleRico on 20/03/2021 - 22:32
      +6

      So skeptical

      And just because he joined as a member an hour ago to tell us about the deal on batteries which he just bought a couple of, from someone with a near identical name to his own…

      OP - Any chance of a photo of your campervan which you bought these for?

      • DonWilson on 20/03/2021 - 22:40
        +5

        Crazy dodgy. "Charge with normal AGM/Gel battery chargers" alone should be enough to scare anyone off.

        • edfoo on 20/03/2021 - 22:54
          +3

          There are new lithium batteries now which apparently have tech allowing them to be charged by chargers which only configured for AGM/Gel batteries, they don't require lithium chargers.

          But having said that, lithium batteries are expensive investment and that price just sounds a bit too good to be true. Will need to open it up and see the electronic circuits and wires used to determine its quality.

          • Mr Icarus on 20/03/2021 - 22:59

            @edfoo: Agreed , but if you look at the website it states specifically that use of a non lithium charger will damage the battery.

            And IMO it's to early to see that tech on "cheap" lithium

          • DonWilson on 20/03/2021 - 22:59
            +1

            @edfoo: I'd want a BMS of similar price to the entire battery to trust a non-configurable AGM charger.

        • 0jay on 20/03/2021 - 22:55

          Pretty standard with lifepo4 to use regular chargers.

          These are very cheap though

          • Felixrising on 20/03/2021 - 23:37

            @0jay: Is it? You'd normally use a pwm charger on a lifepo4?

            • 0jay on 20/03/2021 - 23:58

              @Felixrising: So long as it doesn’t utilise a pulse mode you’re fine. For most lifepo4 (think it depends on the bms)

          • [Deactivated] on 21/03/2021 - 14:26
            +1

            @0jay: Depends on what your "regular" charger is capable of. If you can't change charge settings and can't stand around to switch off the power when the battery is charged then you'd be wrong. Most regular chargers have a float stage which is completely wrong for 12V LiFePo4 batteries. The voltage algorithm is also different, as explained here:

            https://enerdrive.com.au/2017/11/29/can-i-charge-my-lithium-…

            • 0jay on 21/03/2021 - 17:44

              @[Deactivated]: If a particular battery is unsuitable, it wont be warranted for a lead acid charger. Many of them are and explicitly state suitable for regular chargers.

              I have a 50ah lfp that was charged almost daily with a gel charger running a fridge 24/7 for 16 months and the battery's fine (warranted for use with a lead acid charger).

              Float charge is another matter, strictly speaking lfp batteries are better not being fully charged to begin with whereas lead acid require it for longevity.

              Horses for courses.

              • [Deactivated] on 22/03/2021 - 14:52

                @0jay: The charging isn't the real issue, although cramming in the last bit of voltage - which will happen if you can't change parameters on your regular charger - WILL reduce LiFePO4 battery life.

                • 0jay on 22/03/2021 - 17:09

                  @[Deactivated]: If all you need a dedicated lithium charger for is to stop charging when the battery's full then have at it and pay the 80% markup.

                  There's a ton of disinformation kicking around about this chemistry.

                  • [Deactivated] on 22/03/2021 - 17:20

                    @0jay: I haven't come across much bad information myself, and once you've done enough research it's easy to pick those which are based on outdated or colloquial information. There's a huge amount of good information based on experience and tests, including plenty about optimal charging. Anyone blindly using a regular charger on an expensive LiFePO4 will reap what they sow.

                    • 0jay on 22/03/2021 - 18:28

                      @[Deactivated]:

                      haven't come across much bad information myself

                      Buddy, if your research consists of sites like the Enerdrive link you provide above, I'd say your research leaves a fair bit to be desired.

                      I'd argue that people who've thrown money at quality batteries (that are warranted by manufacturer for use with regular chargers) are hardly 'blindly' jeopardising their investment.

                      There is indeed plenty of good information but it is still considered to be a new (and unproven) battery chemistry.

                      • [Deactivated] on 22/03/2021 - 22:37

                        @0jay: Sorry to break the new "buddy" bonds 0jay but having read your earlier comments above I doubted you knew much at all regarding the details of charging LiFePO4 12V batteries. This hilarious sentence did nothing to allay my doubts:

                        but it is still considered to be a new (and unproven) battery chemistry.

                        Might want to tell that to boaties, RVers and home users who've been running LFP systems for many years. It's probably true that Elon Musk may have fooled many people but it appears his company is also pinning it's faith in that "new and unproven" chemistry for Tesla's more powerful cars.

                        While Enerdrive obviously doesn't have your breadth of experience and knowledge of LFP charging and care, they are an established leader in the design and manufacture of Australian battery systems for everything from recreational to household systems. But as you'd know if you researched more, they are just one of many tens of experienced and qualified battery specialists which basically say the same things about 12V lithium battery maintenance for optimal life and performance.

                        • 0jay on 23/03/2021 - 15:09

                          @[Deactivated]: How bout you name the Tesla that’s packing lifepo4?

                          That Enerdrive page is promoting their lithium chargers.

                          No bonds to break, bud, but for sure this is way past tedious at this point. I’m happy to agree to disagree and deal out for good.

                          • [Deactivated] on 24/03/2021 - 10:47

                            @0jay: You didn't know about the Tesla plans to adopt LFP in a range of their vehicles "buddy"? Understandable given what I've read so far on this deal. Try googling, reading and absorbing. I'd give you multiple links to the Tesla announcement and the differences between LA and LFP charging (unsurprisingly they pretty much all say the same thing), but it appears from your recent comments that you have little interest in actually informing yourself. The fact that you didn't know about Enerdrive, think their advice wrt charging is nothing more than a sales pitch for their lithium chargers, and believe that LFP battery tech is new and unproven suggests you have a lot of catching up to do. A few hours of research will set that right and will be time will be well spent.

                            • 0jay on 24/03/2021 - 11:18

                              @[Deactivated]: The question, Poss me old mate, might be why has Tesla not used lifepo4 in its vehicles up to now?

                              Are there any largescale EV manufacturers utilising lifepo4 chemistry to power their existing product line?

                              • [Deactivated] on 24/03/2021 - 11:28

                                @0jay: Don't know the answers to either question recent mate - it's not something I'm interested in. Try googling. While you're there see if you can find info about marine use of LFP and/or RV users who've had 12V LFPs in their vans, for 5+ years in some cases. Could even try looking at some of the feedback from Enerdrive (or Solar King, or….) users. After that try reading some academic tests of LFP batteries, read what "regular LA chargers" do and how that differs from what LFP batteries need, and perhaps watch a few Will Prowse videos.

                                • 0jay on 24/03/2021 - 11:31

                                  @[Deactivated]: The answer, Possy, is that (aside from a lesser energy density than lithium polymer), they are a relatively new and unproven battery chemistry.

                                  • [Deactivated] on 24/03/2021 - 13:02

                                    @0jay: In fact the answer - as I now recall - primarily revolved around relative COST, although I admit I saw that in passing on a single website and didn't follow up due to my lack of interest. Size also came into it although that seems to be a strange limitation for most electric passenger vehicles. But good to see you've done a tiny bit of research. Keep on reading, and don't use a LA charger for LFP unless you're in desperate straits is my suggestion.

                                    • 0jay on 24/03/2021 - 13:21

                                      @[Deactivated]: You’re a little bit 5w bulb in a 60w box aren’t y Possarino?

                                      • [Deactivated] on 24/03/2021 - 17:22

                                        @0jay: Depends on whether you're talking 5W LED or incandescent Zeropal. Either way, call me conservative (lower case c) but I'd rather learn about the nuances of electrical devices from experts than rely on a deals website comment which suggests sticking a metal knife into a socket to see which is the live slot - for example.

                                        • 0jay on 24/03/2021 - 17:31
                                          +1

                                          @[Deactivated]: Right you are, Poss, fact I’d go one further and recommend you steer clear of sharp objects altogether.

                                          • [Deactivated] on 24/03/2021 - 17:55
                                            +1

                                            @0jay: Cheers Newbud. Doubt there's much chance of that on OzB. Blunt objects on the other hand……
                                            On the positive side there's ccasional decent repartee tho.

      • wozz on 21/03/2021 - 08:47
        +4

        @unclerio looks like they had a reason to be sceptical.. now listed as employee and no more mention of personal use

        • UncleRico on 21/03/2021 - 09:03
          +4

          I guess we won't be getting to see those happy snaps of Jonathan Xing's campervan after all!

          Seriously, if you're going to fake a glowing testimonial from a customer, at least put a little thought into keeping your story consistent…

  • Martyroz on 20/03/2021 - 22:29
    +3

    $908 discount hmm.

  • bdl on 20/03/2021 - 23:24
    +3

    Will this fit my Tesla?

  • DavRo on 21/03/2021 - 10:14

    I wonder how many were sold as a result of this post

  • Cpt Archer on 21/03/2021 - 10:47
    +2

    Hi guys, dont charge LFP batteries on AGM chargers. Lithium doesnt like float charging.

    • 0jay on 21/03/2021 - 11:32

      Don't leave it connected once charged. Most lifepo4 batteries (as distinct from lithium polymer) are fine charged with agm chargers provided they don't utilise a pulse charge program

  • r4knxd on 21/03/2021 - 14:35

    Hmmmmmm
    Website suddenly unavailable……

    • edfoo on 21/03/2021 - 16:31
      +1

      Now this deal sounds even more dodgy.

  • Associatedjonathanxing17 @ RollingCart on 21/03/2021 - 19:27
    +1

    Hi Everyone,

    Firstly, thank you all for paying attention to my first post here.

    I would like to take this opportunity to thank @Mr Icarus for pointing out the lack of warehouse address, phone number, and email on our recently established website.
    The Address and phone number have been added to Contact Us page. Our email address has been added to the top of the webpage for our customer convenience to quickly shot us an email.

    Our warehouse address is Unit4 46-48 Whyalla Place Prestons NSW 2170. You are welcome to visit our warehouse during business hours.

    Regards to "Charge with normal AGM/Gel battery chargers", during an emergency situation, it is suitable to charge our lithium batteries. We have tested the Projecta AGM charger on our lithium battery. It is still able to charge lithium batteries up to 90% capacity. Of course, charging Lithium batteries by using a Lithium Batteries charger is the ideal solution.
    However, we are trying to avoid confusing people in the future. This statement has been removed from our product description.

    We offering 3 years warranty on our lithium batteries. Feel free to prompt up to our warehouse if you have any issues with our batteries.

    After all, please leave some tolerance on our new website. It is very hard to keep our business running during these days, we have to seek any online opportunity to keep us up in this tough economy.

    Thanks
    Jonathan Xing

    • edfoo on 21/03/2021 - 21:08

      Thanks, now that's a good response. Might visit your warehouse one day. Like I've said earlier, interested in the wires and components used inside your lithium batteries.

      • error619 on 23/03/2021 - 21:54

        edfoo. Same Pics of Internals of Cells and BMS are exactly the same as off outbax. VoltaX.

        • [Deactivated] on 24/03/2021 - 11:18

          Pics, and comments about supposedly tested capacity/capability, sometimes mean sfa in the LFP and solar panel business. Same applies in a lot of tech to be fair. Think face masks and you'll know what I mean.

          I saw a pic of a superb "BMS" on the website of a very knowledgeable and reputable seller (small business). Googled and found the board pictured, which isn't the BMS of a 12V LFP battery at all. Surprisingly it's still there despite my query, labelled 'reference BMS'.

          I can understand sellers not wanting to dismantle a battery to take pics of the BMS, wiring, and/or cells, but it would be simple enough for a seller to get some images from the (usually) Chinese maker. Might actually help sales if you're an ebay seller.

          • error619 on 24/03/2021 - 14:45

            @[Deactivated]: Possumbl, Yes, it scares me when sellers know little of what they are selling. If I were selling a battery of this Description, I would be happy to dismantle a one off battery for Photos. Then use it as a Display piece for Confidence.

              • error619 on 25/03/2021 - 09:24

                @jonathanxing17: jonathanxing17 Thank You, That look much better. So the 12V 100Ah has Prismatic Cells too?

                • Associatedjonathanxing17 @ RollingCart on 25/03/2021 - 10:11
                  +1

                  @error619: error619, Hi, Yes. All the lithium batteries we are selling are using new prismatic cells (not refurbished ones like other brands you knew). Despite cylindrical cells are cheaper on cost in manufacturing, we still choose to use prismatic cells. Prismatic cells are more stable and able to store more power also. We would like to leave the peace of mind to our customers and fewer returns on quality issues.

                  • error619 on 25/03/2021 - 10:39

                    @jonathanxing17: jonathanxing17 Tried to Order 100Ah Lithuim, but got "Coupon "rolling20off" does not exist!

                    • Associatedjonathanxing17 @ RollingCart on 25/03/2021 - 10:42
                      +1

                      @error619: Hi, the coupon is working now. Thanks

                      • error619 on 25/03/2021 - 11:08

                        @jonathanxing17: jonathanxing17 Went through with ROLLING20OFF, Thank You. for Fixing.

                        • Associatedjonathanxing17 @ RollingCart on 25/03/2021 - 12:31
                          +1

                          @error619: Hi Error619,

                          Thanks for your order, we will process the shipment today.

                          You can track the order shipment status by using the Order Tracking page on our website.

                          Please let us know if you have any questions.

                          You can reach us via a live chat portal on our site or meet up in our warehouse, our staff will help you out.

                          Cheers,
                          Jonathan Xing

                • Associatedjonathanxing17 @ RollingCart on 26/03/2021 - 02:32
                  +1

                  @error619: Hi error619,

                  Just for your interests.

                  I have uploaded a couple of photos of the dismantled 12V 100ah battery.

                  https://www.rollingcart.com.au/wp-content/uploads/2021/03/co…
                  https://www.rollingcart.com.au/wp-content/uploads/2021/03/co…

                  Cheers,

                  • error619 on 30/03/2021 - 12:52
                    +1

                    @jonathanxing17: jonathanxing17 Battery Arrived Today, very happy with the Quality, Battery Meter with Screen Percentage, Volts, Temp and bottom bar Battery Graph. Was 98% Charge when Delivered, so I am already in front. Topping up On Victron Solar Charge controller with Lithium Phosphate Presets. So far so Good, Thank You

                    • [Deactivated] on 31/03/2021 - 10:30
                      +1

                      @error619: If the meter is measuring DoD/SoC then it will most likely be doing that by using the battery voltage - a rough guide, but handier than having to look up a generic voltage/capacity chart.

                      Do you plan on testing the capacity?

                      • error619 on 31/03/2021 - 10:58
                        +1

                        @[Deactivated]: Possumbly I will be, I Used it all night till 6.30am this Morning. Will do capacity test when it is not Cloudy. Won't let battery go below 10%. Lithium is much better that my lead Acid bank.

                        • [Deactivated] on 31/03/2021 - 12:04
                          +1

                          @error619: Probably advisable, esp when brand new. Capacity reading will be very approx in that case though.

                          Hoping the seller will actually deplete one for us so we can be sure of the Ah.
                          I did ask but no response unfortunately. The weight issue could be put to bed with a true depletion/recharge.

                          • error619 on 31/03/2021 - 17:15

                            @[Deactivated]: Possumbly I have Ordered a real Capacity Tester, my old one was too Primitive. 2x Car fridges and a xiaomi smart outlet. But all result can be out by 1% to 3%. Soon as It Arrives, will do a full test on Kasan 100Ah. Will put it up here. Will only go down to 10% as do not want to damage battery. Will do test on my 2 year Solarking 100ah Lithium as well while I am at it.

                            • [Deactivated] on 31/03/2021 - 19:54

                              @error619: Thanks. Will be helpful to others I'm sure.

  • [Deactivated] on 25/03/2021 - 23:31
    +1

    @error619

    Just fyi. At least four things about this battery are worth noting:
    (1) Low voltage cutout for a 12V LFP should be ~11.5V, not 9.2V as their specs appear to suggest. Anything under ~11.5V will cause damage to your cells.
    (2) It has no low temp sensor. Specs reflect this with charging temp 0~55℃, so don't charge in freezing temps.
    (3) The weight of a good 100Ah LFP should be ~13+kg. This battery weighs 9.5kg
    (4) The BMS is taped to the end on the battery.

    Previous under-weight ebay 100Ah LFPs were tested and found to be well under capacity eg 125Ah tested at 80Ah, 100Ah came in at 72Ah.

    • Associatedjonathanxing17 @ RollingCart on 25/03/2021 - 23:50

      "(1) Low voltage cutout for a 12V LFP should be ~11.5V, not 9.2V as their specs appear to suggest. Anything under ~11.5V will cause damage to your cells."

      Please do more study on how the BMS is functioning.Also, Lithium cells are different from AGM. Lower than 11.5V will damage the cells is nonsense.

      "(2) It has no low temp sensor. Specs reflect this with charging temp 0~55℃, so don't charge in freezing temps."

      0~50℃ is the ideal charging temperature. charging in freezing temperature may affect the charging efficiency.

      "(3) The weight of a good 100Ah LFP should be ~13+kg. This battery weighs 9.5kg"

      Do you have any evidence to support 100Ah LFP should be 13+kg? We are using Gotion prismatic cells witch are lighter than cylindrical cells.

      "(4) The BMS is taped to the end on the battery."

      All the component has been securely assembled and attached to the case. it's not taped….

      "Previous under-weight ebay 100Ah LFPs were tested and found to be well under capacity eg 125Ah tested at 80Ah, 100Ah came in at 72Ah."

      Did you actually purchase one from lithium battery from eBay? How did you test the Battery? Have you given the battery to any authorities to test it? If you do can you please share any certificate of the testing?

      • [Deactivated] on 26/03/2021 - 12:53

        I'm collating a reply to all your statements jx17. Will be up shortly.

        While I appreciate your efforts on this deal and acknowledge that quality V price is always a compromise, it's worth knowing some basic facts about 12V LFP batteries before outlaying any money.

        • Associatedjonathanxing17 @ RollingCart on 26/03/2021 - 13:11
          +1

          I respect your shopping attitude, it is important to know what you are paying for. We are establishing a business in the Lithium Battery market, we put a lot of effort into finding and investigating our suppliers to make sure they have the capability to produce good batteries. From a business point of view, we haven't yet invested much in advertising as other brands do. that's why we didn't put a markup on the price yet.

          • [Deactivated] on 26/03/2021 - 17:10
            +1

            @jonathanxing17: Your 3 yr warranty is a good start.

      • [Deactivated] on 26/03/2021 - 16:49

        (1) Low voltage cutout for a 12V LFP should be ~11.5V, not 9.2V as their specs appear to suggest. Anything under ~11.5V will cause damage to your cells."
        Please do more study on how the BMS is functioning. Also, Lithium cells are different from AGM. Lower than 11.5V will damage the cells is nonsense.

        Agree, my comment was simplistic and may be misleading to people new to the topic.
        That said, a 9.2V cutoff is pushing boundaries unnecessarily and is well below the recommended cutoff used by all reputable makers I've seen to date.

        The 11.2-11.5V (~2.8V per cell) figure is dependent on cell quality AND the safety margin a maker believes is warranted for longevity. Higher quality cells are more likely to tolerate lower voltages than cheap cells. Essentially there is a significant built-in safety margin in 11+V cutoffs, with the aim of limiting cell "damage" (deterioration) over time. Some makers such as Relion suggest 11V, Enerdrive and Victron 11.2V, others are more conservative. Big boys like Amptron mention a cutoff as low as 10V (2.5V per cell) and have high claimed cycle numbers which suggests confidence in the quality of their cells.

        At 10V (2.5V for each 3.2V cell) LFP battery cells are considered fully depleted. This is not ideal for cell chemistry if you're aiming for long life - as 12V LFPs generally are. That's why LFP specs state for example 2000 cycles at 100% DoD, 4000 cycles at 80% DoD etc. So basically (although not strictly when you get to peak voltages), the higher you maintain cell voltages during use the less deterioration/more life your battery will have (storage voltage is another story). Here are just a couple of links on LFP upper and lower voltage :
        https://www.evworks.com.au/page/technical-information/lifepo….

        https://www.solacity.com/how-to-keep-lifepo4-lithium-ion-bat… (mentions ~8V as the absolute limit for causing permanent damage).

        Even when 12V LFP batteries have passed their practical usability they can be repurposed for lower intensity applications - ie they aren't "dead".

        It is possible that your BMS is actually set for a voltage higher than the 9.2V specified, in which case your specs should be amended. I've seen similar specs previously on cheap 12V LFP batteries so it could simply be a terminology problem or a mistake in the specs. Personally I wouldn't buy any expensive LFP (not that yours is) with a cutoff lower than 10V and I prefer a higher cutoff of 11.2+V.

        Perhaps you could deplete one of these batteries and confirm the final voltage for us?

        I'm well aware of the differences between LiFePO4 and AGM batteries - which don't have "cells" per se, and are essentially LA (designed for regular 'deep cycling' obviously).

        "(2) It has no low temp sensor. Specs reflect this with charging temp 0~55℃, so don't charge in freezing temps."
        0~50℃ is the ideal charging temperature. charging in freezing temperature may affect the charging efficiency.

        Charging efficiency isn't the real problem, charging in sub-zero temps will affect the cells themselves. Some 12V LFPs designed specifically for use in cold off-grid conditions actually have pre-warmers to overcome this problem. While a temperature sensor may not strictly be necessary in most parts of this country if you follow charging specifications, it's included in better quality batteries so that the BMS will not allow charging at low temperatures. This video by Will Prowse explains how it works: still looking for link

        "(3) The weight of a good 100Ah LFP should be ~13+kg. This battery weighs 9.5kg"
        Do you have any evidence to support 100Ah LFP should be 13+kg? We are using Gotion prismatic cells witch are lighter than cylindrical cells.

        There are numerous examples of 100Ah prismatic LFP battery specs which confirm my weight comment. Check for yourself.

        Amptron 11.5-14.5 kg (some have metal cell casings)
        Enerdrive 12.6 kg
        iTech 11.7 kg
        Relion 12-14 kg
        SolarKing 13.7 kg
        Victron 15 kg

        "(4) The BMS is taped to the end on the battery."
        All the component has been securely assembled and attached to the case. it's not taped.

        My apologies IF that's the case. You pics - appreciated btw - appear to show it bound to the end of the battery by some packaging tape. Perhaps that was simply for the picture?

        (5) "Previous under-weight ebay 100Ah LFPs were tested and found to be well under capacity eg 125Ah tested at 80Ah, 100Ah came in at 72Ah."

        Did you actually purchase one from lithium battery from eBay? How did you test the Battery? Have you given the battery to any authorities to test it? If you do can you please share any certificate of the testing?

        While Ozbargain is hardly an authority here are two anecdotal examples. See stumo and happyadventurer's comments here: https://www.ozbargain.com.au/node/604315

        I've read similar comments about under spec capacity elsewhere. Will Prowse has had similar results on SOME cheap Chinese LFPs but he has also found others to be on/above spec.

        Weight is certainly not definitive proof of below-spec capacity or quality, but is often a good indicator (as some of Prowse's breakdowns show - heavy duty bolts, wiring, bridges, BMS, encasement etc are marks of quality). Where tests and reputation aren't available weight is one of the few hints (along with other specs such as max discharge current, expected life cycles etc) a buyer has as to quality - IF THAT'S WHAT YOU'RE AFTER.

        Out of interest what cells are used in Kasan batteries?

        • [Deactivated] on 26/03/2021 - 17:09

          Prowse link to temp sensor ~7m mark

        • Associatedjonathanxing17 @ RollingCart on 26/03/2021 - 18:46
          +1

          Hi, Thanks for your information.

          I have to admit it Kasan is not the top-range batteries. However, base on our usage, it is performing very well.

          Looking into the market…
          Enerdrive eLITE 12V 100Ah Lithium Battery - $939
          iTech 100AH 12V LITHIUM ION BATTERY - $1299
          Relion 100AH 12V Lithium Battery - $1050
          SolarKing 100Ah 12v Lithium Battery - $599
          Victron 100Ah 12 V - 1999 from mygenerator.com.au

          Not everyone has 1k dollars to invest on lithium batteries.

          You can't compare a cheap Rio with Lamborghini huracan because of both of them having 2 seater.

          The cells we are using is from Gotion 3.2V, JBD BMS

  • error619 on 30/03/2021 - 12:30

    jonathanxing17, Arrived

    • Mr Icarus on 30/03/2021 - 19:27
      +1

      Are your first impressions good? Hope so! I'm kicking myself for not buying one at the price, but decided to wait until pay day!

      • Associatedjonathanxing17 @ RollingCart on 30/03/2021 - 21:33
        +2

        It's not too late. Please put our website in your bookmark. We will continuously run the promotion and will let you guys know. Thanks!

      • error619 on 08/04/2021 - 20:45

        Mr Icarus, Should have a Capacity Test up in few Hours, up to 74.69AH 12.9V Going Very well. 174 Watts per hour. Had to speed it up.

        • [Deactivated] on 08/04/2021 - 22:34
          +1

          Charts vary a bit but at 12.9V capacity is ~20%.

          • error619 on 08/04/2021 - 23:42

            @[Deactivated]: Possumbly Put my Result below, went down to 11.2V. 104AH with a lot more to go, but I killed the test as not to Damage battery.

  • error619 on 30/03/2021 - 20:22
    +1

    Mr Icarus, It is Very Good so far, charged it up with Victron Lifepo4 solar charger, it was already at 98% when arrived.. Screwed in fused Cigarette Plug, plugged in Inverter.Running Most of the household Items. 47" TV Laptop, Modem
    Xiaomi Home. Been charging Phone. Been all running since 4.40pm. Down to 91% according to Meter on battery. So far Very happy. I own a Solarking 100Ah in a Battery Box. So Quality is about the same. I run Most of household off grid. Rest are on Grid Solar. These would be good to replace my 560 Ah Lead acid Deep cycle when it goes. I was going to Build a 100Ah Lifepo4, but this was much cheaper.

    • Associatedjonathanxing17 @ RollingCart on 30/03/2021 - 21:34
      +1

      Thanks for your comments. Hope you enjoy the battery. Just send us a message on our website if you have any trouble. We will help you out! Cheers.

      • error619 on 30/03/2021 - 21:58
        +1

        jonathanxing17 Thank You, you have already helped out. I was the Guy that asked for screen Config info, And you Delivered. Excellent.

  • error619 on 08/04/2021 - 23:46
    +2

    Kasan 100Ah 12V Lithium Battery Capacity Test
    Voltage: 011.2V
    Current:
    0.000A
    Power: 0000.0W
    Capacity:
    104.53Ah
    Electricity: 001.36KWh.
    Carbon dioxide: 001.35kg Electricity charges: 0.00$
    Time record: 000:07:48
    Internal temperature: 36°C/96.8°F
    I Put Screenshots on Facebook Under "Kasan 100Ah 12V Lithium Battery Capacity Test" Anyone can see.

    • [Deactivated] on 09/04/2021 - 11:09
      +1

      Can't find it e619. Can you post a link please?

      Graphs I've seen suggest 11.2V is somewhere between 95-98% DoD for a 100Ah LFP, although they may differ depending on cell type (which is rarely specified in the graphs).

      I'm surprised that at ~12.9V the draw was 74.59Ah yet you have 104.53Ah at 95+% (est). All capacity test graphs I've seen show a flat but slowly declining line until 12.5-12V when there is basically a drop off the cliff. Just one of many examples here: Relion 100Ah Discharge at 1C Relion is cylindrical not prismatic iirc.

      The rough calcs based on your 12.9V measurement (~80% DoD) suggest it would top out at ~90Ah.

      All very interesting. Thanks for the info.

      • error619 on 09/04/2021 - 14:01

        User is Daren Langsford. facebook. But if you search Discription of battery should show up. 11.2 Volts was my Cut of Voltage. Battery Metter was showing 11.7 volts this morning befote i left it to charge with
        Victon on solar controller for few Days. But i never had a chance to use Multimeter to confirm. I think the bms kicked in overnight and equalized Cells. I was happy with 4 Wire Bluetooth tester. Seems Quite Actuate.

    • Associatedjonathanxing17 @ RollingCart on 11/04/2021 - 16:18
      +1

      Hi Daren,

      Thanks for the testing result.

      Real Battery capacity is our bottom line of quality control.

      Please let us know if you see any issues while using the battery. Your opinion is valuable to help us keep going.

      Thanks!
      Jonathan Xing

      • error619 on 11/04/2021 - 21:09

        jonathanxing17, I do believe I could have got more Amps out of battery, if I had of gone down to lower Voltage. Was not willing to Damage battery. I used a 4 Wire Test method, that was Bluetoothed to my phone. The Device I used was a "150W Constant Current Electronic Load 200V 20A Battery Discharge Capacity Tester" Ebay.

        • [Deactivated] on 11/04/2021 - 22:54
          +1

          Would be simple enough for you to do a test yourself @jonathanxing17. Then you could upload the video to your website a la Will Prowse's here

          • error619 on 12/04/2021 - 06:25

            @[Deactivated]: Possumbly, This is the link to the one I bought in Australia, it has Bluetooth. 4 Wire to Battery for better Accuracy. https://www.ebay.com.au/itm/150W-Constant-Current-Electronic… Seller lanplus_australia

            • [Deactivated] on 12/04/2021 - 11:47
              +1

              @error619: Thx. How's KW going? What breed is he? Looks a bit like Aus Mist.

          • Associatedjonathanxing17 @ RollingCart on 12/04/2021 - 15:40
            +1

            @[Deactivated]: There is so much criticism on the internet.
            People only judge the battery base on the price without looking at the products. We would like to give people who don't have much budget a chance to access lithium batteries. However many people won't trust our brands at the beginning.

            As I said, our battery would not be the top-range product that cost you thousands of dollars. But we can offer 3 years Australian warranty, this means it's not a fake product. Also, we have a warehouse, people can find us if they have any issues.

            We are actively looking for someone who has good influence power like Will Prowse to do a product review. Because what the customer saying is more powerful than we do.

            • [Deactivated] on 12/04/2021 - 19:19
              +1

              @jonathanxing17: Hate how this website doesn't autosave comments. I'll repeat briefly what I lost when revoking my neg. (see below)

              You could easily do a controlled capacity test yourself, video parts of it and post it on your website. That would give potential customers - who are rightly skeptical of cheap LFPs - confidence. Along with your 3 yr warranty and good service/backup (already attested to by error619) that would give you a significant edge over other sellers at the cheap end of the market. Jmo of course.

              My neg of your deal (now revoked) was because of your website's original exaggerated discount claims (now amended), fake marketing and the fact that the website disappeared when you were challenged by Ozbargainers. Sounded more than sus. But you've since come back and appear to be trying to do the right thing. My advice as a consumer - keep it real, be upfront and honest, know your product, put enough detail on your website to promote confidence, and keep the marketing bs to a minimum. Oh and occasionally offer a deal when your finances permit. :-)

              GL with your business, competition is important in every market.

              • Associatedjonathanxing17 @ RollingCart on 12/04/2021 - 19:30
                +2

                @[Deactivated]: Thank you very much for your advice! We do the video soon.

                I will come back with another deal in May. Our new products EnerCore Lithium Battery targeting the Mid-range market will arrive in our warehouse then. EnerCore will equip the upgraded BMS that can allow series connection to 48V. So it will be more solid and strong and suitable for off-grid systems.

                Thanks again!
                Jonathan Xing

                • error619 on 13/04/2021 - 10:34

                  @jonathanxing17: jonathanxing17, This is good news, the better the BMS and the ability to connect more in series…the more sales you can achieve. Looking forward for more deals.

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