Description

DIY Power Bank Mobile Tablet Power Motherboard Circuit Board 3.7V to 5V 2A Boost Module for 18650 Battery

Product Features:

1.4 LED lights display power, intelligent automatic shutdown in non-working state;

2. Built-in lithium battery protection IC, with over-current, over-voltage and under-voltage protection;

3. Dual USB output;

4. Motherboard size: thickness 8mm*width 32mm*length 69mm.

Basic product parameters:

Input port: MicroUSB (Android port)

Input requirements: 5V constant voltage power supply can be used as charging input power, matching charger is above 5V1A

Output port: USB

Output parameters: 5V1A/5V2A

Requirements for rechargeable batteries:

Available batteries: 18650 battery, mobile phone battery, tablet battery, MP3 battery, etc. 3.7V-4.2V polymer lithium battery, which can be powered by a single cell (slice) or multiple cells (slices) in parallel (series connection is not supported, and series connection is not allowed ). (Note: Parallel connection increases capacity, series connection increases voltage, so it can only be used in parallel!)

You can connect 2-6 18650 batteries in parallel! ! !

Unusable batteries: dry batteries, accumulators, 1.2V rechargeable batteries, nickel-metal hydride batteries, 3.2V iron-lithium polymer lithium batteries, etc.

Pay attention to the following points when installing the product:

1. The batteries must be connected in parallel, and the voltage must be between 3.2-4.2V to work. Both 18650 flat-head and polymer batteries can work;

2. The battery is positively connected to the motherboard B+ and negatively connected to B-, the motherboard will burn if installed;

3. New and old batteries, batteries with different models and brands cannot be mixed.