DIY Powerbank for 4x18650
Description
- Simple case for DIY powerbank - You'll need 4*18650 lipo battery - you can get them from an old notebook battery or buy them from ebay/aliexpress - And one of these modules shown on the 5th picture (I use 5V 2.1A one - supports fast charge) - I used some electrical tape to hold batteries with module together.
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