5V 2A Power Bank töltőmodul töltő áramköri lap Step Up Boost tápegység modul 2A Kettős USB kimenet 1A bemenet
5V 2A Power Bank Charger Module Charging Circuit Board Step Up Boost Power Supply Module 2A Dual USB Output 1A Input
DIY mobile power/power bank circuit board
 
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 supply, the most matching charger is above 5V1A
Output port: USB
Output parameters: 5V1A/5V2A
 
Requirements for rechargeable batteries:
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 (slices) in parallel (series connection is not supported, not in series) ). (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-hydrogen 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.
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