chemistry Add power bank As I had another 18650 battery, I purchased an additional case for Power Bank.This time I purchased from eBay. Because i... 25.03.2019 chemistryDIYModel SPCSmartphone
DIY Semi-self-made Power Bank I accidentally found a battery case on Amazon. I thought it was interesting.And I bought 18650 batteries (cylindrical li... 18.03.2019 DIY
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