Xiaomi Mi 10400 mAh Power Bank Tested and Reviewed

by Chetan Bhawani 25

Mi Power Bank 10400 mAh

So, I have always been skeptical about power banks and the external chargers, for a few reasons. I have tried the chinese chargers without any branding, the original Nokia power bank and some from well known Indian companies. Xiaomi’s Mi Power Bank is my latest smartphone accessory, and the same question was still in mind. Is the Xiaomi Mi Power Bank going to give some good charge, especially for the reason that it is priced exceptional well against the competitors? the answer was as I expected. It did give a good total charge of upto 7600 mAh by average, and below are the exact results.

Build quality of Xiaomi Power Bank

The power bank compared to some other similar powered power banks, is quite small although it won’t fit anyone’s pocket. The metal casing is what gives it a premium look and good feel while holding, and even on continuous use when we were charging the phones, there was barely any heat noticed and the reason behind that could be this metal body that dissipates the heat.

The MicroUSB pin for the charging of power bank is a little of an issue, and this is not just for the unit we have, but several people complaint of the same. You just need to a press a little harder for the pin to sit into the port for charging. Also, the power button was quite useless for me, because whenever I plugged in the USB pin and connected the wire to a smartphone, the charging would start automatically. The only use with the power button was to show how much battery is left in the power bank, based on the number of lights beside the button.

Mi Power Bank Size

The smooth aluminum exterior does retain stains or dust and that is visible, but that material is the reason why it won’t get scratched easily.

If you have bought one, here’s how to find out if it is the Indian one or Chinese unit that you have – Xiaomi 10400 mAh power bank Indian vs Chinese.

Note: Before you check the two results below, one thing to note – A smartphone when charging from 0-75% and charging from 75-80% has different speed of charging. The reason could really not be known, but it was something related to the charging technology, as claimed by one of the officials of a Chinese accessory manufacturer, and thus I tested the power bank with random charges and then from 0-100 too.

Trial 1

Before putting each of the following devices into charging with the power bank, they were put into airplane mode and no apps were running.

  • Xiaomi Redmi 1s: 80% to 100% – 400 mAh
  • Gionee Elife E7: 30% to 100% – 1750 mAh
  • Samsung Galaxy K Zoom: 45% to 100% – 1330 mAh
  • Samsung Galaxy Note 3: 65% to 100% – 1100 mAh
  • Samsung Tab S 8.4: 0-61% when the power bank finally totally discharged – 2990 mAh

This was the exact sequence and the percentage of battery in each device that I charged. It was a total of 7480 mAh of charge provided by the Xiaomi 10400 mAh power bank. Just to confirm, there was another test done with actual zero to 100 percent charging for few devices.

Trial 2

This time, three devices were selected and charging was done from zero to hundred.

  • Samsung Galaxy Note 3: 3200 mAh
  • Gionee Elife E6: 2000 mAh
  • Samsung Tab S: at 54%, the power bank got totally discharged, thus for Tab S: 2650 mAh

So this time, it was around 7850 mAh, which is no much different from the first test but here, we chose to go from zero to maximum and see if the results really differ or not. The condition here too was the same – airplane mode and phone not in use.

Here’s the explanation why it is between 7500 mAh to 8000 mAh although the charger has a 10400 mAh capacity: Understanding Power Banks.

The 10400 mAh one works with iPad because the 2.1A output is what is needed by the iPad, while the smaller 5200 mAh variant cannot charge the Apple iPad, because it gives 1.5A output. We have not dug deep into this, and have kept it quite simple with day to day use and smartphone charging, rather than checking out the input and output current, which is important if we are talking technicality of this power bank.

Mi Power Bank Charging

Time taken for charging the Mi Power Bank: It took about 9.5 hours for a complete charge for the power bank, and this is similar to any of the heavy duty power banks that we put on overnight charging. Xiaomi hasn’t mentioned anywhere whether the charging ends by itself once the battery is full, but we did notice the charging stopping by itself on full battery, which is essential for saving power as well as in avoiding any damage due to over-charging of the power bank.

The speed of charging increased when I used a 2A input wire rather than 1A one, but still it doesn’t take any lesser than 6 hours to completely get charged from a discharged state.

So overall, the Xiaomi’s Mi 10400 mAh power bank does the job as expected, and you cannot except a 100% charge from any power bank. There are a few advantages apart from the low pricing compared to the competition – metal body keeping the device cool, not very huge for the capacity of it, and it gives a sturdy feel to hold. Also, Xiaomi says that there is a 9-layer protection for the charger circuit. One of the big disadvantages could be the single output USB, and thus only one device can be charged at one time.

Chetan Bhawani

Chetan Bhawani is a dentist, a tech blogger and a passionate writer in the field of technology. He keeps himself connected to the web for the entire day, of course except when he's dozed off! Add +Chetan Bhawani on Google Plus for more!

  • pritesh palan

    I am getting almost same charge from 10400 mAh power bank. Never knew about why i am not getting full capacity utilization from it, then read your article “Understanding Power Banks” and i was impressed by the way you explained it.

    Loving your articles.

  • SurajHodi

    Best Review till date…

  • SurajHodi

    Awesome And Really its true that NO one gives 100% output as stated like 10400 gives only 7500 mah avg.

  • SurajHodi

    Still Planning to Buy one when stock fills up again on Flipkart.

    • let me know your experience with it and if its up to code and expectations!

  • Thanks Chetan! I was hoping to get some figures on how long it took for the power bank to charge a mobile device i.e. is it slower than charging it via USB / electrical socket. I want to buy this for my iPhone 5S and I am wondering whether its safe to do so considering how much current it would need to withdraw & whether its fast enough, at least comparable when charging by Macbook Pro.

    • It is different, yes, because when charging from the USB socket of my Macbook Pro, it takes like 2.5 hours to get about 25-30% charge, while from the electrical socket directly it takes around 1.5 hours or a little more, but that again depends on the wire I’m using – 2A or 1A.

      • Sorry man, I can’t seem to get the answer I was looking for. Putting up in points:
        1) Is it safe to use with iPhone 5S? Not sure what’s involved but I would guess proper Voltage & Current flow is needed. I have seen instances of bad charger bricking the iPhone so don’t want that to happen since I plan to use this while travelling.
        2) How slow / fast is it when charging a phone? For instance iPhone 5S has 1500+mah battery and like you said it take 2.5 hours to charge it, irrespective of what I use i.e Macbook Pro / Wall Outlet. Would you say it takes the same time or it’s slower?

        • 1. Safe to use with the iPhone, because an iPhone takes 1A and whatever the output from the power bank is, that would get converted to 1A before getting into the iPhone battery.

          2. The charging here depends on output, thus it is slower when you charge from your Macbook Pro, but from wall outlet it is faster.

          And with your second question I was a little confused earlier. Now this clears it. You are talking about your iPhone 5s to get charged. It takes same time as it takes to charge from a Macbook Pro.

          The charging is not dependent on the output, but on the input of the phone.

          • Thanks for clearing that up! Appreciate it.

  • Nikhil Narkhede

    Thanks for the review @ChetanBhawani:disqus . planning to buy one . 🙂

  • I’m also planning on getting me one of these, but the stocks are not available at present. Still using my 12,000 mAh China one which I had bought a year back. Still going steady.

  • samir naik

    nice review thanks

  • srikanta bhattacharya

    do you have any idea why flipkart permanently discontinued this item?

    • It should be back soon, because they have had listed as discontinued earlier too and it was again back.

  • srikanta bhattacharya

    Thanks Amit for your prompt reply.

  • Definitely a disadvantage competitors are releasing banks with multiple usb outputs. And that is a high selling point for a power bank. multi charging on the go is essential. But xiaomis low price and high mAh rate strong points too. Overall their are more good points than bad so this piece is good.

  • Suraj Racharla

    Not much of an innovation but happy Xoiami is taking initiative and realeasing one of their own power banks. In the future i expect Samsung and Lg and Apple and many other companies to do so. I think if you use this only for an Xiami smartphone the time taken for it to charge would be faster than a different device connected to the power bank. I may wrong but why else would they make a power bank.They might have mafe the powerbabk just to sell the product and it has nothing to do with the type of smartphone. The power bank seems regarding the points it got.

  • This is a great review indeed. Xiaomi has made great success these days

  • shashank

    i have a moto g2 and its battery capcity is 2070mah cani use xiaomi 10400mah power bank to charge it
    since the power bank output is 2.1a will it affect the battery of my moto g2 pls reply soon

  • im_mukund

    Only disadvantage is single port charger. But still a good one.

  • Gökhan Dalkılınç

    Those who want to buy this product I would like a warning. If you plan to carry with you and bags and so on. You can enter a bit of a nuisance if you do not use accessories. I used it for about 2 months and I came out when moving really sometimes rent-free!

    Instead, it produces still take PowerBank 10,000 mAh Xiaomei you would advise. 25% smaller in size and therefore more portable devices. Current banggood at 12.66 with 100% guarantee of authenticity to $ sold. Previously he was just going gray, but now that go on sale at discount gold and pink. I do not think because you lose more time if you plan to take this figure to fall to a more easily. 🙂

  • Louis Lambert

    One feature about Power Banks that few reviews ever cover is “pass-through” charging capability, that is, the ability to charge a device while simultaneously charging the Power Bank itself. The genuine Xiaomi Power Banks are one of the few brands that do support this feature.

  • Ervin Wee

    Why my MI 10400mAh powerbank wont auto start charge my Iphone 5?