Dual USB 1A/2A Mobile Power Bank Charger Module 3.7-5V Booster

Product Intro on
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 parameters:
Input port: MicroUSB (Android port).
Input requirements: 5V constant voltage power supply can
be used as charging input power supply, matching charger
POWELEX
Above 5V1A.
Output port: USB.
Output parameters: 5V1A/5V2A.
Precautions:
Battery
connection
Usable battery: 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
in parallel Power supply (series connection is not supported,
series connection is not allowed). (Note: Parallel increase
capacity,Series connection is to increase the voltage and 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 hydrogen batteries, 3.2V iron
lithium polymer lithium battery, etc.