Hello guys, this is a very easy method to build a powerbank at home,
This is a safe and easy tutorial to make a powerbank at home. You just need a li-ion battery charging discharging module & some old li-ion batteries. #electronics
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You can easily get them from any laptop repairing shop at extremely cheap price.
Or below are the links
Soldering iron: https://www.banggood.in/60W-Switch-Adjustable-Temperature-Soldering-Iron-Welding-Station-Tool-Kit-with-5Pcs-Soldering-Tips-p-1139951.html?p=LH101113091859201708
Li-ion Batteries: https://amzn.to/2AujhDg
5v charging discharging module: https://amzn.to/2Sl80vU