This Power Bank Module is Dual USB 3.7v to 5V 2A Mobile power bank charging module with Battery Level LED. It meets the individual needs of your DIY Power bank, but you must understand basic electronic assembly.
Features
- 4-level LED lamp display power, not working state intelligent automatic shutdown;
- The built-in lithium battery protection IC, over-current, overpressure, under-voltage protection;
- Dual USB output ports.
- Input requirements: 5V constant voltage power supply can do charge input power, the most matching charger for 5V 1A above
- Requirements for rechargeable batteries:
- Compatible Batteries: 18650 batteries, cell phone batteries, flat-panel batteries, MP3 batteries, etc. 3.7v-4.2V polymer Lithium battery.
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