Power Bank Module 18650 Battery Input 2A Output 2.5A

Product Features
1. Level 4 LED indicator shows battery level; intelligent automatic shutdown when not in use.
2. Built-in lithium battery protection IC with overcurrent, overvoltage, and undervoltage protection.
3. Dual USB outputs.
4. Mainboard dimensions: 8mm (thickness) * 32mm (width) * 69mm (length).
5. Input 2A, Output 2.5A
6. Supports simultaneous charging and discharging.
7. Power off by pressing and holding the switch for approximately 5 seconds.

Basic Parameters
Input Port: MicroUSB (Android port)
Input Requirements: 5V constant voltage power supply can be used as the charging input power source; compatible charger must be 5V 1A or higher.
Output Port: USB
Output Parameters: 5V 1A/5V 2A
Battery Requirements:
Compatible Batteries: 18650 batteries, mobile phone batteries, tablet batteries, MP3 batteries, etc., 3.7V-4.2V polymer lithium batteries. Single cell power supply or multiple cells in parallel power supply is supported (series connection is not supported). (Note: Parallel connection increases capacity, series connection increases voltage; parallel connection is the only option!)
Can connect 2-6 18650 batteries in parallel!

Unusable batteries: Dry cell batteries, rechargeable batteries, 1.2V rechargeable batteries, NiMH batteries, 3.2V lithium iron phosphate polymer batteries, etc.

Please note the following during product installation
1. Batteries must be connected in parallel; the voltage must be between 3.2-4.2V for operation. Both 18650 flat-top and polymer batteries are acceptable.
2. Connect the positive terminal of the battery to the motherboard (B+) and the negative terminal to B-. Reversing the connection will damage the motherboard.
3. Do not mix new and old batteries, or batteries of different models and brands.