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Xiaomi ZMI No.20 210W 25000mAh USB PD Power Bank QB826G $141 ($25 off) Delivered @ Mostly Melbourne via Amazon AU

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Xiaomi ZMI No.20 210W 25000mAh USB PD Power Bank QB826G $141 ($25 off) Delivered @ Mostly Melbourne via Amazon AUAffiliate
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happychild100 on 15/06/2023 - 00:42 amazon.com.au (575 clicks)
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Happened to be going through my old Amazon buys and noticed this was at a good price, then saw it had an additional coupon you can add to bring it down to $141, which is $1 more than last time. Not the best price ever but certainly good still!

Have been using mine since last June and i can't fault it, use it almost every day in some form.

Product Description:

  • Capable of 100W USB PD output over the first USB-C port. Charges high-powered workhorse laptops like the 16 inch MacBook Pro. Also capable of outputting 45W from the second USB-C port and 65W from the USB-A port at the same time for a combined maximum output of 210W.

  • 25000 mAh battery capacity can charge a 13 inch MacBook Pro 1.3 times. But still under the battery size limit imposed by the FAA, so you can bring it on the plane in carry-on luggage and use it during flights.

  • Built with five 21700 high-quality power cells for better capacity/energy density and greater charge-discharge performance than traditional 18650 battery cells. Comes with temperature, overcurrent, overvoltage, and short circuit protection.

  • Supports pass-through charging and UPS

  • Awarding winning industrial design: Red Dot Winner 2021

Price History at C CamelCamelCamel.
Electrical & Electronics 25000mAh Power Bank Xiaomi

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Mostly Melbourne

closed Comments

  • magnitude on 15/06/2023 - 01:12
    -2

    Can't you just plug in a charger into the plane seat, esp on long haul flights

    • rekke on 15/06/2023 - 01:17
      +3

      Yes, but that's not what you buy a power bank for.

    • happychild100 on 15/06/2023 - 01:55
      +2

      I mean, if you want to get a bit of charge in your phone while you sleep on a plane, sure i guess. Power banks aren't just used for on long plane trips though. A lot of laptops and the Nintendo Switch will burn through the battery more than they charge on plane seat ports and less wattage power banks.

  • VRZ on 15/06/2023 - 01:58

    Do you still get the pass through charging at 100W to a laptop while charging the power bank?

    • xoom on 15/06/2023 - 05:11

      Doubt that in seat usb charger can keep the powerbank charged up to get pass through working. Specially if you got a laptop plugged in it.

    • SmoothCactus on 15/06/2023 - 17:37

      Pass through seems to work fine. It is an advertised and mentioned feature by the manufacturer.

      However i can’t attest to whether the bms is equipped to do this long term and whether it can without affecting the cells in some way. Unfortunately the manufacturer won’t tell us that, and only independent testers could tell you for certain.

      There’d need to be pretty extensive testing for that, but if you’re doing it every now and then it won’t make a difference in the off chance it could affect it long term.

      If you are concerned about getting ever bit of juice and life out of this, don’t do it. If you’re okay with maybe getting a little bit less life by a few months out of the years this will last then you’ll be fine.

      • randomdude on 15/06/2023 - 22:21
        +3

        I've been running two ZMI no 20s as 24/7 UPS with passthrough charging for, I don't know… At least 1-2 years. No dramas at all!

        I've done a few partial power cycles for maintenance, I've had a few run-flat moments, everything is still working fine.

        You can also unplug the power source with absolutely no disruption to the output.

        As tempted as I am to get another one I'm happy with the two I have and I doubt we'll see many others like it in the future.

        p.s you can also daisy chain them!

    • AwesomeAndrew on 16/06/2023 - 16:54

      Yes, you can get 100W pass through from the OUT1 port while charging the power bank through OUT3 port at 45W and can also output 65W simultaneously on the OUT2 port using the included proprietary cable. Since the charging rate is lower than the discharge rate, you cannot run it in this mode continuously if you plan on discharging more than 45W.

      Voltage and current combinations supported in this configuration (USB PD): OUT1 5V 3A, 9V 3A, 12V 3A, 15V 3A, 20V 5A, PPS 5-20V 3A, OUT2 5V 3A, 9V 3A, 12V 3A, 15V 3A, 20V 3.25A.

  • rainbowyen on 15/06/2023 - 03:19

    This thing sells around $80 in China

    • Mel dragons on 15/06/2023 - 06:49
      +3

      Do you have a link and what's the transit time to get it from China.

      • charmandad on 15/06/2023 - 10:06

        They do sell for under $80 on Taobao(Chinese Amazon).
        Also, Taobao do provide very fast and cheap international shipping service for almost everything.
        Unfortunately, these cannot be shipped internationally, they don’t allow batteries to be shipped.

        • SmoothCactus on 15/06/2023 - 17:32

          Got a link, I’ve never seen these under $99 aud on ali/tao and all the others.

          It’s important to remember, lots of sellers list things low but then make up for it by hiking the shipping, so have you ever seen these under $99 shipped??

          Also these CAN be shipped internationally, on account of the fact that I have shipped dozens of these from dozens of different sellers and vendors over dozens of different occasions.

    • Manny Calavera on 15/06/2023 - 13:09

      20,000mah max for flights in China.

  • Wiadro on 15/06/2023 - 07:21
    -1

    I remember when power banks were $20

    • techno2000 on 15/06/2023 - 09:05

      This powerbank is for charging laptops.Phones can be charged just fine by a 20w $40 powerbank.

      • xoom on 15/06/2023 - 12:04

        He likely meant this one.

        https://www.ozbargain.com.au/node/586873

        Xiaomi ZMI QB823 20000mAh 65W Power Bank Pro $19.99 + Shipping ($0 with FIRST) @ Kogan

        And yes. I have 2 of them. Just charged my s22 ultra with it. 🙃

        Before I get roasted. I have used it to charge my lenovo yoga laptop whenever I need a top up and away from a power socket.

  • goatonboat on 15/06/2023 - 07:55
    +8

    I have this power bank.

    Absolute beast, there’s basically nothing it won’t fast charge. Can highly reccomend.

    • CoolHwip74 on 15/06/2023 - 09:41

      Really? What about a Tesla?

      • goatonboat on 15/06/2023 - 09:58
        +2

        Funny you say that - the 21700 cells inside are the same size as those found in a Tesla ;)

    • beatsntoons on 15/06/2023 - 12:27

      yeah it's a great charger. Bought it for an overseas trip and it was (not a literal) a life saver

  • HarleyRider on 15/06/2023 - 09:53
    +1

    Best powerbank i have ever owned, thanks OP got one more.

  • wrx5 on 15/06/2023 - 11:29

    On the Mostly Melbourne website it states this:

    Rate Capacity (Output):14000mAh (5V 6A)

    Battery Capacity:88.9Wh/ 90.7Wh 3.63V 24500mAh/25000mAh

    why these numbers are different?

    Also picture 4 states max input as 65w but information on the web page says 120w max input.

    https://mostlymelbourne.com/products/xiaomi-zmi-no-20-200w-2…

    Another difference is about port max outputs. Check (click to zoom) the picture 3 and picture 7 on Amazon. Output 2 has max output written as 120w on picture 3 and 100w is on picture 7. (same on Mostly Melbourne pictures as well)

    So how come same product has 2 different pictures??

    • alxjpow on 15/06/2023 - 13:39

      It uses a voltage booster to output the required voltage. There's an efficiency loss of ~25% as heat depending on the voltage increase from 3.6v.

      Battery capacity would be a direct output from the cells (not possible). Most manufacturers only list this… So Xiaomi is being honest, I appreciate that.

      There are a few older models which are similar, they've probably gotten them mixed up.

      • wrx5 on 15/06/2023 - 14:05

        So what is the real capacity? 14000mAh or 25000mAh?

        • SmoothCactus on 15/06/2023 - 17:25

          The real capacity is still 25,000mAh, for all intents and purposes.

          You need to understand, when we measure mAh we measure at the cell voltage. So at 3.6v is the standard for the batteries that are used inside these chargers. When we compare, we use the cell voltage. So when you are looking at different battery banks, you can operate under the assumption that they are expressing their mAh rating at 3.6v because that’s what all the batteries use.

          However mAh is simply a measurement, it stipulates that at 3.6v it will provide you with 25amps for an hour (25,000mA = 25A). This measurement is dependent on the voltage,

          If you were to use 5v output, the mAh it can output will change accordingly, it will only be able to output 14Amps for an hour. This is the same thing effectively.

          Unless you have some technical reason for diving into the mAh ratings, just look at what it is rated at for its battery cell (like i said usually 3.6v) for comparison purposes.

          Hope that helps.

          • wrx5 on 16/06/2023 - 09:10

            @SmoothCactus: Thanks for the explanation. It helps to understand the basics.

            I am trying to understand its capacity under 100w port usage which is 20v 5A.

            • alxjpow on 16/06/2023 - 12:35

              @wrx5: I've asked this bloke to test it. Does a great job of checking these things properly and explains things for the layman.
              Good to actually find out in the real world.
              https://youtu.be/WIrLw1fQ3GU

              Says he's already bought it, just really busy I guess. Maybe he'll post a video review in a few weeks.

    • SmoothCactus on 15/06/2023 - 17:30

      There are two models. One allows up to maximum 65w input for charging the battery, the other goes up to 120w.

      Other than this, they are both identical.

  • AussieGargain on 15/06/2023 - 11:37
    +1

    Targeted? I see full price and no discount

    • happychild100 on 15/06/2023 - 12:19
      +1

      Looks like the coupon has run out sorry! The rep might see this and be able to work out something for you based on their previous comments in past deals.
      @Mostly Melbourne

    • happychild100 on 19/06/2023 - 11:10
      +1

      Back in stock at $141.52 :)

      • AussieGargain on 19/06/2023 - 18:20

        Thank you so much for the comment. I ordered one.

  • wrx5 on 15/06/2023 - 14:07

    Amazon shows as $166. what am I missing? Couldn't locate the coupon.

    • xoom on 15/06/2023 - 15:10
      +1

      Its gone. Party is over.

    • happychild100 on 19/06/2023 - 11:10

      Back in stock at $141.52 :)

  • SmoothCactus on 15/06/2023 - 17:29
    +1

    I know the sale is over, but this is the best battery bank to exist imo.

    If you look at it from every aspect possible, output, price, passthrough, efficiency, etc etc.

    This is the best you can get, at least from my 60+ battery bank roundup of batteries in the price range of $100-$250 that can be taken on a plane (max 99Wh)

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