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 it... 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 lit... 18.03.2019 DIY