DIY 4×18650 Battery Power Bank Shell Box with 2xUSB Output & Display black

Description

Compact and lightweight design for easy carrying.DIY a power bank for your phone.With LCD display show charging progress.Please charge the batteries with USB cable or other chargers.Compatible for 4 x 18650 Li-ion rechargeable batteries (not included).Support voltage and over-current protection, short circuit protection.Widely compatible for iPhone, iPad, Samsung, LG, Sony, MP4, PSP, camera, etc.