I have this charger, okay it might charge mobile phone devices fast but powerbank takes forever to charge, sometimes up to 40 hours. Also if you leave it unused the charge is not retained, within an hour it looses 30% of the power that it has, which eventually makes it pointless to have.
Basically, if you want to use this powerbank, you have to charge your mobile devices straight away after charging the powerbank for 40 hours.
The Xiaomi 212W Hypercharge Power Bank 25000 is now available in more European countries following its recent launch in the UK. The portable accessory allows you to charge three devices simultaneously with a maximum single port output of 140W. Plus, there is an integrated display and support for fast charging protocols.