This is a typical USB power bank manager module that you can use to DIY your own power bank, rechargeable power storage unit. It can output either 5V 1A or 5V 2A power when a parallel 18650 or other lithium ion battery module is connected to it, also can recharge the battery module when connected a USB micro cable with your phone charger.
4-level LED power level display, auto shutdown when it is in non-working condition
Built-in lithium ion battery protection IC for protection against overcurrent, overvoltage and undervoltage conditions.
2 USB type-A power output channels
USB micro-B connector for charging power input
Dual output power : 5V 1A and 5V 2A
Suitable for 18650 rechargeable batteries, mobile phone or tablet battery module or any 3.7 – 4.2 Vdc batteries.
Supports up to 6-slot parallel battery module
Dimension of board : 69 mm x 32 mm x 8 mm
ONLY works with parallel Lithium Ion (Li-ion) battery module.
DO NOT use series battery module (causing damage to power manager and also your device), lead acid battery and other non-rechargeable batteries!
For Lithium Polymer (LiPo) batteries, use LiPo battery charger unit instead.
Ensure that your rechargeable battery has between 3.2 V and 4.2V before using with this module, which is in good condition.
DO NOT connect the battery module in reverse polarity.
DO NOT use old or aged batteries, or combined usage of new and aged batteries, may result malfuntion or damage to the power bank manager.