Dual USB 5V 1A 2.1A Power Bank 18650 Li Batery Charger DIY Module LCD Display Mobile Power Battery Charging Board Module
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Product description
- Can connect one li battery or multiple li batteries in parallel. But the following conditions must be met capacity 20W mAh, 3-4.2V voltage.
- Protection function Integrate li battery protection circuit to prevent overcharge, overdischarge and overload.
- Output load indication After connecting the load, long press LED switch to start the output. Then screen would show the word 'OUT' and output voltage current 5V 1A or 5V 2.1A.
- Charging indication LCD screen would display the word 'IN' when charging.
- Connect the battery positive pole to B+, connect the battery negative pole to B-.
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