Xiaomi Power Bank 2 10,000mAh Review

Xiaomi Power Bank 2 10000mAh Quick Charge 2.0 Portable Charger

This is the latest offering of the Xiaomi portable charger line, very similar to the previous “Xiaomi Power Bank Pro” model which also has a 10,000mAh battery. Key differences are the micro-USB instead of the USB-C port and the price. I’m a big fan of Xiaomi portable chargers and I immediately pre-ordered mine when it appeared on BG. This is not a free-item review as I paid full price for it :wink: .

Specs from Xiaomi:
Model: PLM02ZM
Material: Aluminium Alloy
Capacity: 10,000mAh 3.85V ( 38.5Wh )
Product weight: 0.250 kg
Dimensions: 130 * 71 * 14.1mm
Battery Type: Lithium polymer battery
Input: 5.0V2.0A, 9V/12V18W
Output: 5.1V2.4A 9V/12V15W MAX

One of the reasons I love Xiaomi power banks is because they state all the numbers in the spec, including the energy rating which is useful to measure efficiency. This version uses a 3.85V battery which gives it a slight advantage in energy as compared to 3.6V and 3.7V chemistry. Higher nominal voltage and an extremely efficient conversion module gives the Xiaomi 2 the almost unbelievable results in the discharge tests (See below).

It comes with a short USB cable and a brief instruction manual in Chinese (not pictured)

Some info in the back of the box

Build quality and interface:

The Xiaomi Power Bank 2 is very sleek and can easily be confused with a 5,000mAh power bank. Being made from an aluminium casing, build quality is great and it feels very solid.

Close up of the finish and CNC machined logo. Very even anodizing in a dark blue-grey tone.

Vs. other Xiaomi power banks

The slimmest of the bunch

Size comparison with a S2+

Close-up of the top: button, 4 LEDs to show capacity, micro USB for input and USB out. The matte finish can be easily scratched.

Lots of info underneath

Operation and performance:
-It has auto start when a device is connected
-Will automatically turn off after 30 seconds if a load is not detected
-One single button operates the power bank, it will turn on the output or restart it when pressed.
-Double click activates a low current mode, designed to charge/power low power devices such as bluetooth headset, USB lamp, keychain flashlights, etc. These devices draws very small of current and in normal mode would not keep the power on.
-Pass-through charge is possible but QC is disabled for both input and output.

“Real world” device compatibility test:
When doing tests on a power bank it is much different to use a USB load than a real device. Most of the times a dummy load will force the power bank to put out certain power while in a real world situation it will not do the same with a phone or other devices. My devices for this test each have certain characteristics when it comes to drawing power:

-iPhone 7: Charges up to at 2A, but limited to 1A if the coding is not correct.
-YZXstudio 8th Gen powerbank: will automatically detect the output and switch to highest possible charging voltage (12V).
-Aukey 30,000mAh powerbank: one of the few devices to draw 2.4A, some chargers don’t provide Apple 2.4A coding or can’t handle this current and will trip.

-iPhone7: Charged fine at 5.2V/2A :+1:
-YZXstudio powerbank: Maximum charge rate detected was 12V/1.2A. The YZXpowerbank will draw as much current as possible until the voltage drops 0.5V. This is inline with the specs, 15W @ 12V Max.
-Aukey powerbank: Charged fine at 5.1V/2.4A :+1:

The included USB cable is the flat type and measured 0.09 Ohm resistance at 5V 2A. This is good compared to my other short cables.

Charge test:
-Maximum input using a QC3.0 adapter was 9V/2A
-From empty to full it only took 3hr 38min, impressively fast.
–49.6Wh required to fully charge with an efficiency of 77%
-After being fully charged it draws 33mA while idle
-There is a current dip to 0 every ~10 minutes during the CC phase, this only lasts a couple seconds but it is enough for the graph to pick it up. I think this is how it tells the battery voltage without applying a charge. The dip is sightly visible in the voltage line because the Anker PowerPort+1 has voltage compensation when under load (lower current = lower voltage, as you can see towards the end of the charge). I will have to test it again with another charger and see if this happens as well.

This is my new style of graph for my power bank reviews, now includes the energy axis. That is a nice and sharp CC/CV drop.

Discharge tests:

5V/1A: output was completely flat, putting out 36.84Wh in 6:57 and achieved an amazing 95.6% efficiency. This is one of the highest of any power bank I’ve ever seen, a very close match to the YZXstudio 8th which is several times more expensive.

5V/2A: nice and flat output like in 1A test, slightly lower energy.

9V/1.5A: output remained above 9V until 2:03 and started a slow drop, final reading was 7.01V at 2:25.

12V/1.5A: It wasn’t able to sustain 12V for long and started a slow drop from the 30 minutes mark. The specs says a maximum of 15W for both QC output and I was drawing 18W in my tests. This won’t be a problem when used with a smartphone because in 30 minutes the current would have already dropped from 1.5A.

The complete chart

-Spec shows 6,900mAh of output capacity at 5V/1A rate and I got 6,959mAh. Not something you see everyday! :+1:
-The internal battery is LiPo with a nominal voltage of 3.85V, so compared to a 3.7V 18650 power bank of the same capacity there is a small energy increase.
-Compared to the older Xiaomi 10,000mAh (pictured above), I’m getting roughly 7Wh more at 5V/1A which is a dramatic 23% increase. This is enough to give an extra full charge to a smartphone with a ~1300mAh battery.

Final words…
I’m overall very impressed with the performance of this power bank, given its compact size and price I would say this is simply the best 10,000mAh power bank you can buy. :crown:

The good:
-Slim, lightweight and great build quality.
-Extremely high efficiency, out-performs most higher capacity and more expensive power banks.
-Strong output enough to charge the most power hungry devices. Recharges very quickly as well.

The bad:
-None! For the price I have no complains.

Thanks for reading and I hope this review has been useful to you. :smiley:


Edit: 5V/1A discharge test completed, it performs so well I couldn’t wait to update the OP. :slight_smile:

Looks good! I’ll order one next week when I get rent from my tenant.

By the looks of it, it's as good as the other 10.000mAh Xiaomi LiPo powerbank with the USB-C port.

I'm still running some tests on my review unit of the powerbank 2

And almost half as cheap! I’m really surprised by the performance, it got 7Wh more than the 18650-based Xiaomi 10,000mAh. Will order another one because I’m sure the price won’t drop.

If I remember right, the Xiaomi 3x18650 10,000mAh powerbank puts out about 7000mAh+ in real life.
If this has over 95% eff, this puts out some more but OTOH it is more expensive by about 6(?) EUR.

Xiaomi shows in the specs output capacity of 6,250mAh at 5V/1A but in my tests I measured <6,000mAh and <30Wh output. The output voltage is also on the low side which means it won’t compensate cable loses and reduces charge rate for high current drawing devices. The internal cells being LG F1 are rated 3,350mAh but as with all 18650s the actual capacity at realistic discharge rates and LVP cutoff are ~5% lower, 3140mAh tested in the MC3000. So it is actually more like a 9,500mAh total…

I have found the capacity rating in LiPo cells to be more accurate, probably something to do with most of the charge being stored above the nominal voltage.

The original xiaomi 10,000mAh was $11.99 on release but after a high demand (BG alone has sold over 150,000pcs) the price has gone up to $17.99 which is ridiculous as the new version is cheaper, has better performance and comes with QC2.0.

The full review is now up, it has taken me 4 days to complete it (1 cycle per day). My data gathering method is mostly automated, but I have to manually set it up each time.

I will now do a 0.5A discharge test just to see if we can squeeze even hgiher efficiency. :wink:

Thanks Will. Ordered a silver version.

Thx for the test… Nice to see capacity increase, but for me the old 10Ah design is much more convenient, the new one looks too long and too wide. Also the price for old one was 10$ on Gearbest and Banggood and this new one is like 50% more… If they added second usb output, i would be tempted to switch, but for now I will stick with the old one (with 3x ncr18650B inside)…

Got mine today in silver from Banggood and it’s authentic. Size compared to the 10400mAh version. I charged it but haven’t checked it out yet. I’m sure it will perform as specified

Can you please link to the one that is authentic? There are a few diffrent to pick from, and the price spred is big….(I never bought anything from banggood yet)

Thank for a great forum, Im new and amazed :slight_smile:

Both of mine are authentic. You can check yours here

I haven’t bought one yet….I’m new to Banggood and don’t know how to distinguish the real from the fakes. The fact that it’s out of stock on Xiaomi homepage also disturbs my calm…

Can somebody link to one that they believe is authentic?

What about the pro-version, with usb-c there is one on banggood that states QC3? On Xiaomi’s homepage they state its QC2…or have I missed something?


Nope not fake, but the Mi Pro model, that sports USB Type-C instead of the model that will34 is reviewing here, which has micro-usb instead. I can pretty much guarantee that if you order yours at BangGood you'll get an authentic one.

Thanks, I feel a lot more confident now :slight_smile:

One detail….

Can someone confirm the weight? The old 10000mAh is 207g (according to mi.com) and the new “10000 mAh PRO” model is 238g (according to mi.com). Is this unit heavier at 250g? I think it’s odd that the “PRO” is 31g heavier then old non pro…

As you can read in my own review of this powerbank, that's not correct.

Do you guys not get decent deals on Amazon? Here in the U.K. I can get a top quality Ravpower unit at a lower £/mAh than getting the Xiomi off Banggood.
Admittedly you do get a better value as you go up in capacity but the 13400 Ravpower is close and way better value here.

Quick charging my MotoX Pure at 9 volts

Could you do a review Xiaomi 20000 mah Gen 2, it was just releaved
a pic inside it is better