• out of stock

ROMOSS USB C Power Bank, 26800mAh PD Portable Charger 18W $33.65 + Delivery ($0 with Prime/ $39 Spend) @ Romoss AU Amazon


Amazon deal runs for 3 days.
$1.40 more expensive than Clear's deal $32.25 in November and Hamza23's in January

Some info thanks to Clear:

The 26800mAh (SW30 Pro) has multiple fast charging technologies including 18W USB-PD via USB-C, Quick Charge 3.0 via the blue USB port and 5V/2.1A via the white USB port. For recharging they have USB-PD via USB-C, QC 3.0 via Micro USB and and 5V/2.1A via Lightning. Other fast charging technologies supported include Huawei FCP, Samsung AFC (excl. S9/S10), QC2.0, MTK PE and Apple 2.4A. They both support pass-through charging.

Price History at C CamelCamelCamel.

Related Stores

Amazon AU
Amazon AU
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closed Comments

  • +17

    Great product!

    Mine has been fantastic for over 2 years, has been invaluable especially when on an aircraft.

    • +19

      yeah its has been,, over 2 years since i have been on an aircraft … great product though

    • +2

      Has worked flawlessly for close to 2 years for me too. Highly recommend 👌

    • What about restrictions to what you can take on board?
      Is this capacity not restricted?

      • +1

        I think the limit is around 30000mAh usually - this shouldn’t be too big to take with you. It’s to stop people taking stupidly humongous batteries that could power the whole plane

        • +2

          30000mAh is over the limit. Cut off is around 27000mAh so this squeezes in the limit without needing prior permission from the airlines

      • No restrictions, all good.

      • +2

        This is just under 100Wh so it's fine to be taken on a plane. If it's over 100Wh and under 160Wh (e.g. 30000mAh) then you need prior approval from Qantas/Jetstar and declare it at check in with Virgin.

        • Wh = V * Ah
          OP's link says that its a 9v battery.
          So wouldn't this be over the qantas limit since:
          9v * 26.8Ah = 241.2Wh?

          • +3

            @900dollaridoos: You're misreading somewhere because the cells in power banks are not 9V. They're 3.7V so it's 99.16Wh.

            The power bank is capable of doing 9V/2A charging as part of the USB Power Delivery and Qualcomm Quick Charge protocols.


            • @Clear: Thanks for the info. Must be an amazon error as they have it listed as 9v in their description.

              • +2

                @900dollaridoos: Yeah I see where it is. I think they intend on implying that's the voltage it can output as.

                A general rule of thumb is that power banks for phones will have their cells rated at 3.6V or 3.7V.

          • +2

            @900dollaridoos: To add: all lithium cells are 3.6 or 3.7v (depending on the chemistry). There is simply no other voltage. (Anything else comes from bundling cells together, and/or adding voltage regulating circuits).

            • @fruchle: Great info, thanks :)

              • +1

                @900dollaridoos: Think about 800V electric car batteries. That means… about 220+ cells for every battery. Then you have a 50kwh battery. So, about 62 batteries.

                That's over 13,500 lithium cells.

        • Is it fine to take more than one power bank let's say 2 or 3 but all of them are 20000mAh and less?

          • @Bargains hunterr: I have taken two 20k mAh on flights in hand carry. No issue. Dont think 3 to 4 would be an issue either provided its 20k mAh each.

  • +2

    Is Romoss a good brand? This or Anker?

    • +6

      I'd say Romoss, anker, xiaomi all up there as good brands (and nowhere near as expensive as the rubbish at jbhifi/harvey)

      • Yep, cell quality and safety features are good for all three brands.

        Other features wanted such as USB C PD 18W + and much more up to 100W for laptops etc,

        as well as multipple port availibility and high Total W output ( using more than one port, or all together ),

        or display type/options will depend on which model you need/chose and your budget of course.

        This particular model has a great mix of ports and display features ( can see Amp and Watt draw as

        well as voltage which is handy and fun to use ), and one of Ozbargains favourites over the last few years

        since release. I have bought/used over 20 powerbanks and this is up there as one of the best for features,

        quality and value. But keep in mind it is high capacity so fearly large and heavy.

  • Is this One passthrough charging does anyone know whos got one

    • +1

      No it doesnt. Measured amps go to 0 when I try to passthrough

    • I have the SW20PS+ which is basically the same unit but 20000mAh and it does passthrough so it's suprisingly that this model doesn't.
      EDITED: be aware that only some of the ports are auto-sensing bi-directional so it will depend on which ports you charge to/from.

      • Some reviews for this model say "Yes" to charge through.

  • +1

    RRP is misleading. 30000 mAh version's RRP is $46.99

  • I have a number of these, and have purchased a number of these as gifts. Large, but offer all the power you need for most situations.

  • +2

    love mine, never misses a beat. The bad i could say is the size of the unit itself.

  • What input power does it support to charge the bank itself and how long to charge to full?

    • +1

      Qc 18w Max, about 11 hours

      • +1


  • 2022 Gen 1 Mobile phones and laptops support 45w to 120 watts. Eg; S22 ultra, x5 pro

    • Samsung learnt their lesson with batteries. The s22U seems to only blip on 45w just for the sake of marketing. Most reviewers who compared 25w to 45w only showed a difference of about 6% after 20mins of charging.

      Even my s21U only charges at full 25w when in optimal conditions. Ie. Screen brightness down or screen off, as soon as it gets warm, it throttles to 8w. Gaming, gps or watching a video throttles charge rate.

    • +1

      There are newer Romoss power banks with 45W USB-PD as well as Huawei SuperCharge support. This is just an older model.

  • +1

    This is the best model so far.

  • +3

    I find these huge powerbanks just a bit too big and heavy. Prefer the 10000mah ones unless taking a seriously long plane flight or camping in the middle of nowhere for a week.

    • +2

      Agree. These are great to have even in case of power outage, and like you say camping or bus/plane/train trips.

      But the most used size weight powerbanks are the thinner/smaller/lighter ones you can easily put your

      phone on and still hold with one hand, or in your pocket without your pants falling down lol.

      I find between 5000mAh to 10000mAh the sweet spot, but also have one of these and bigger for longer trips too.

    • +2

      there is a smaller 10000mah ROMOSS- one just 17.94


      • +1

        Does this one also do "super fast charging" - I don't understand about volts and watts but don't think it's a fast charger if not rated 18W? Similar one here on eBay but with side ports and LCD screen for $3 extra:

  • +2

    Good to use as a powersource for dashcam when parked.

    • I want to do precisely that. Does it work fine? How long can it power the dashcam?

      • Depends on dashcam. I once left mine plugged in, 24 hours later and got cir 50% remaining viofo a119 on a romoss 30000mAh… I have also once left it there for 48 hours with 30% battery remaining.

        Usual practice is plug in when the car is park outside (eg shopping centre) and back to the cars power socket before driving off.

        • +3

          Why don't you plug it into a power bank that supports passthrough charging that's permanently connected to the cars power socket? Effectively acting as a UPS. Then you wouldn't have to switch plugs all the time.

          • @aldroid: Too much effort to find one.

            I got a blitzwolf and a romoss at home. Cbb figuring out whether they are 'passthrough'.

            Also, constantly charging a pwrbank is not ideal for longevity, i suspect.

            • +2

              @DisabledUser141524: Hahaha whatever dude. Replying to my comment was more effort than it takes to find out whether a powerbank has passthrough charging or not. The slight reduction in battery life is a small price to pay for the convenience of not having to switch cables constantly. FYI, I've had a Xiaomi 2 port powerbank permanently connected to my cigarette lighter socket for about 4 years. It's very convenient for when I'm charging my phone in the car as it means when I stop to get petrol I know that the charge cycle will not get interrupted plus the voltage spike when you start the engine can be damaging to phone batteries. I rather sacrifice a $20 power bank than a $500 phone.

              • +1

                @aldroid: ///This/// I fully agree with your outlook. Power banks are relatively low cost tools and work horses to make our life easier. Whether it last 3 yrs. or only 2 yrs. with heavier more reckless use (such as leaving it in car over summer where it may be needed) is small price to pay for the much added convenience and peace of mind. I buy 1 to 2 new power banks a year (after initially purchasing many lol) and enjoy new tech and features and just hammer the older models.

    • I had considered this but I'd be too worried about leaving a big battery in a car during hot days. I think it's a matter of when not if for the battery to fail.

      • +1

        Yea. Can be tricky if car is parked outdoor mostly. Works for me because mine is mostly in the garage or underground parking.

  • Thanks OP, bought one in preparation for the 2022 AusGP in Melb.

  • +1

    I got approximately two years out of it. Flaky now. The USB C port refuses to charge any devices. The other ports still work. My hunch is the heat got to it. It would get warm when charging the 18w and then when I also loaded another device to charge it would get warmer. Constant use like this I think broke it. Last time I used it… it had Switch and two iPads connected to it. This was on a trip and I was the only smart one to bring a powerbank. USB C never worked after this trip.

    • -2

      Shouldn't be using 2 devices at the same time to be honest

      • Wot? Then why in the world would the power bank have multiple outlets of the same type??

        Copy pasta
        “3 USB outputs enable to charge a mobile phone, a tablet or a Nintendo Switch simultaneously at maximum speed up to 3 amps”

        If the brick died because of multiple devices, that’s not user error that’s poor quality power management on the brick.

        Good quality powerbricks will handle that power draw properly and not it to overheat and get damaged.

        • -1

          It doesn't last as long the more devices you use, it's just common sense lol

          • @Toffcuz: Well that means its poor quality… its just common sense lol

        • "UFO" Although you are technically correct, and I agree that you should be able to use

          all ports at once to it's max possible output on a hot day without one or more of the ports failing or

          permanently causing damage. Unfortunately in the real world this does not seem to be the case with

          all types of usb chargers, 240V wall chargers, car usb chargers as well as powerbanks, mainly when it

          has usb C PD as well/or high Amp output usb A and both, especially when using 2 or more outputs

          together. I'm sure some brands and models are more prone to this failure than others, but many

          seem to have this problem eventually.

          • @ozhunter68: everything you said was correct, except for the all added to the start of the 4th line.

            not all chargers are created equal, and some will definitely perform as a user would except. Just not at these price points. Like nearly everything, you get what you pay for.

            • @UFO: I did not mean all as in "all brands, makes and models", but "all types of chargers." If you spend more to get better brand as well as a model that can easily handle your needs with some buffer kept in reserve, the chances of failure would lessen. You still hear of failures, but time will tell how long these will last with regular use as they have only been out for few years for the more powerful models and GaN chargers.

  • Any recommendations on one that also does wireless charging?

    • All I can recommend is work out what your minimum charging needs are, your budget, then look for that within the decent brands. Personally I find the Kogan Branded power banks decent for the price when on sale or free delivery. They have a decent 10000mAh wireless 10w out power bank also with 18w USB C of and qc3 in/out for $35 sometimes, then delivered free is bargain.

  • Fully recharging the 26,800mAh power bank only costs 11 hours with 18W wall charger.

    Charging with standard 5v 2amp will take close to 20 hours

    • I think they are referencing the 9v/2amp port.

      • +1

        I have SW20, the 20aH version of this powerbank
        It actually took around 8 hours to charge on standard 10w charger.

        11 hours on 18w charging time probably not far off.

        • I agree.

  • Hi,
    Besides the battery size what is the difference to this model? I get confused with the different and find it hard to tell the difference between the various models.


    • No other difference besides the appearance.

      • Hi, 2 questions please:
        1. Is this model better/worse than your OP:
        2. Does this one do "super fast charging" - I don't understand about volts and watts but don't think it's a fast charger if not rated 18W?
        Similar one here on eBay but with side ports and LCD screen for $3 extra:

        • +1

          The 30000mAh you linked is an 18W power bank and the difference between the 26800mAh and what Tzeeman linked is the 30000mAh has no display

          The other 2 linked have no 18W fast charging. Romoss call them 'fast charging' because prior to USB-PD and QC, 2.1A charging was called fast charging under the USB standards.

  • Silly question, but can this be used to recharge an iPhone 11?

    • +1

      Yep should charge it fine.

      • Thank you!!

  • thanks, already have one… grabbed a second one so the kids can have one

  • I recently had the 20k one that I bought just over two years ago have its battery swell up and die…. but it was solid up until then. Would buy another.

  • OK for a Iphone SE a couple of years old? Thanks in advance..

    • +2

      Yes, of cause. also Iphone SE support 18W fast charger

  • +2

    I have this powerbrick and it's awesome. Only issue I see annoying about is the amount of energy that gets wasted during conversion. Ex: my pixel 6 pro almost gobbles up 35% of stored capacity out of the brick when charged fully which is almost 9000mah to charge 4600mah battery.

  • Looking for a powerbank that can also charge small laptops, what should I be looking for in the specs? Also, does anyone have a recommendation? Much appreciated.

    • +2

      Minimum 45w power bank with USB pd. Xiaomi zmi ones are highly recommended but expect $40-60

      • Thanks mate!

    • +2

      When you say "small laptops" your going to have to get more info on how many watts and volts your system wants and/or needs. I have various Chromebooks and a Lenovo Thinkpad 11.6" that charge via USB c pd, and although I find most Chromebooks can charge with the least amount of watts, some can be fussy with voltage needed. I had a Cygnet Pro 60W 20000mAh power bank that would charge 3 out of 4 Chromebooks and my small Thinkpad, but not a Lenovo S330 14" Chromebook, yet a small 6000mAh USB c 15w max $8/$10 Aldi power bank would. It's more to do with Voltage/charging tech compatibility that makes it charge or not, then higher wattage just makes it faster.

      • +1

        Awesome write up, thanks. I was looking to charge my Dell XPS 13 9305.

        • +1

          From what I have read the XPS 13 models require a fair bit of power to charge, so pretty shure

          that one might need minimum 45W. Do your research with that one as this model won't do it.

          • +2

            @ozhunter68: 18w pd powerbank will not nearly be enough. 45w is better but i would prefer they go for the 65w power delivery powerbanks.

            • +1

              @xoom: We are on same page. All depends on your budget and needs. The more watts output the better lol.

  • Do you know if we can recharge a macbook pro off this battery? (late intel version)

    • Will only really slowly trickle charge when your not using it if your lucky.

      Get a 45W minimum powerbank and higher if your budget allows.

      • Any suggestions on a particular powerbank? I am after a laptop charger as well, but don't even know where to start

        • You can start here.

          Xiaomi ZMI QB823

  • I have one, brilliant, and about to buy this one

  • I just got this powerbank, is the display meant to flash while it's charging?

    • Mine flashes on charge too. Also just tried charging my iphone with it, the power bank dropped 25% and my iphone charged 5 % ?? wtf ?? product seems dodgy

      • yep mine dropped from 72% to 0% after plugging it into my phone after like 5 minutes, and now it has 'charged' 0->43% in 24 minutes at 18W (measured at plug at ~18-20W)

        anyway I'll give it a few cycles, hopefully it fixes itself (as part of the battery activation)

        • I drained it out of the box and then fully re charged it, took 24 hours but it seems to be working more accurately now, got a full iphone charge off maybe 15%

  • The instructions state to only use the factory supplied charging cable and power adaptor. I only received the power bank. On the box, it states that only the power bank and manual is inside. Confusing.

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