Busirde Aluminum Cylindrical Mini Battery Bank Power Back Case Cellphone 18650 Battery Backup Charger DIY Box

Amazon.co.uk Price: £3.16 (as of 05/05/2021 04:54 PST- Details)

This DIY 18650 power bank can install 1 batteries inside and don’t need any set up,just put battery in and start to use
This DIY power bank box is easy to use,just twist the bottom lid off and put the batteries inside
This portable power bank box is small and light which is a convenient tool to use when go out