--- title: "Xiaomi ZMI QB820 20,000mAh Power Bank" date: 2017-07-21 09:00:57 permalink: https://lesterchan.net/blog/2017/07/21/xiaomi-zmi-qb820-20000mah-power-bank/ author: Lester Chan categories: - "Battery & Power" tags: - 20000mAh - power bank - Taobao - Tmall - USB Power Delivery - USB-C - Xiaomi - ZMI --- I didn’t realize that the brand [ZMI](http://www.zmifi.com/) is one of [Xiaomi’s ecosystem company](https://xiaomi-mi.com/company/partners/). ZMi supplies Xiaomi with power banks, batteries, and chargers. I came across the [ZMI QB820 20,000mAh Power Bank](https://world.tmall.com/item/549313360644.htm?id=549313360644) (ZMI 10) when my friend commented on one of our common friend’s [post on the launch of the Razer Power Bank](https://www.facebook.com/iantan/posts/10154785764141733). The [Razer Power Bank](https://www.razerzone.com/gaming-accessories/razer-power-bank) is a 12,800mAh power bank that is able to charge laptops as it supports USB Power Delivery. It retails for US$150 (S$207). On the other hand, the ZMi 10 is a 20,000mAh power bank that only retails for **CN¥299 (S$61)**. It measures 160mm x 81mm x21mm and weighs 405g. The ZMI 10 has two output ports, one USB-A and one USB-C. The USB-A port outputs 5V/2A, 9V/2A or 12V/1.5A. The USB-C port supports USB Power Delivery and can deliver up to 40W. You can use it to charge your MacBook Pro 13″ (2016/2017), but it will be at a slower pace as the recommended power is 61W. Two cables are provided in the packaging. A 30cm USB-A to MicroUSB/USB-C (2-in-one) cable and a 50cm USB-C to USB-C cable. The time taken to charge the ZMI 10 fully depends on the power of your USB-C charger. A 45W charger will take about 4 hours, an 18W charger will take about 5.5 hours, and a 10W charger will take 9 hours. I would like to thank my friend, [Vanessa Tan](http://vanessatan.mobi/), for helping me buy and bring back the ZMI 10 all the way from Beijing, China. If you are interested in getting the ZMI 10 in Singapore, you can try [this link on Qoo10](http://list.qoo10.sg/item/XIAOMI-NEW-ARRIVE-XIAOMI-ZMI-10-20000MAH-POWER-BANK-%EF%BD%9C3-OUTPUT-PORTS%EF%BD%9CUSB/532292641). It seems authentic, but I am not responsible if it is not. [![Xiaomi ZMI QB820 20,000mAh Power Bank - Outer Box](https://farm5.staticflickr.com/4287/34875123883_d8f873e0e8_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Outer Box")](https://farm5.staticflickr.com/4287/34875123883_47c179a69c_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Outer Box") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Box Front](https://farm5.staticflickr.com/4288/35684164965_03347b8d99_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Front")](https://farm5.staticflickr.com/4288/35684164965_4267398125_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Front") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Box Back](https://farm5.staticflickr.com/4087/35684161225_2cc9397daa_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Back")](https://farm5.staticflickr.com/4087/35684161225_97759f464d_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Back") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Box](https://farm5.staticflickr.com/4242/34875123163_830184d2d5_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box")](https://farm5.staticflickr.com/4242/34875123163_1a1d4cc149_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Box Open](https://farm5.staticflickr.com/4285/35684164415_eb74f31eec_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Open")](https://farm5.staticflickr.com/4285/35684164415_c86a414f13_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Open") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Box Contents](https://farm5.staticflickr.com/4112/35297008960_c4cdbdc800_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Contents")](https://farm5.staticflickr.com/4112/35297008960_24f44cd78a_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Box Contents") [![Xiaomi ZMI QB820 20,000mAh Power Bank - 30cm USB-A to MicroUSB/USB-C (2-in-one) Cable](https://farm5.staticflickr.com/4027/34875122353_5e9597937e_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - 30cm USB-A to MicroUSB/USB-C (2-in-one) Cable")](https://farm5.staticflickr.com/4027/34875122353_eabae822b0_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - 30cm USB-A to MicroUSB/USB-C (2-in-one) Cable") [![Xiaomi ZMI QB820 20,000mAh Power Bank - 50cm USB-C to USB-C Cable](https://farm5.staticflickr.com/4104/34875121923_bcd15c9aca_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - 50cm USB-C to USB-C Cable")](https://farm5.staticflickr.com/4104/34875121923_326d6b4bd0_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - 50cm USB-C to USB-C Cable") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Top](https://farm5.staticflickr.com/4211/34875121323_25ff5c8a5d_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Top")](https://farm5.staticflickr.com/4211/34875121323_8e221823be_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Top") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Bottom](https://farm5.staticflickr.com/4068/35684162425_2860b4008f_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Bottom")](https://farm5.staticflickr.com/4068/35684162425_2b73efc3cc_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Bottom") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Top - Ports](https://farm5.staticflickr.com/4218/34875120713_0e91be7123_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Top - Ports")](https://farm5.staticflickr.com/4218/34875120713_670f5635d7_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Top - Ports") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Right](https://farm5.staticflickr.com/4030/34875118583_e4be24d33d_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Right")](https://farm5.staticflickr.com/4030/34875118583_4c32372e18_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Right") [![Xiaomi ZMI QB820 20,000mAh Power Bank - Button/Status Indicator](https://farm5.staticflickr.com/4257/34875120213_ede3751aff_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Button/Status Indicator")](https://farm5.staticflickr.com/4257/34875120213_2ea60ede8a_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank - Button/Status Indicator") [![Xiaomi ZMI QB820 20,000mAh Power Bank](https://farm5.staticflickr.com/4033/34875119753_b2bffe1d59_c.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank")](https://farm5.staticflickr.com/4033/34875119753_7475674370_o.jpg "Xiaomi ZMI QB820 20,000mAh Power Bank")