Battery weight a good indicator of quality / capacity ?

Well we don’t want to arm them with better faking information! :laughing:
HKJ’s reviews give all the specs of cells and there is consolidated versions of his tests in my sig link post.

Any movement inside a cell tells all, check out HKJ’s disassembly of batteries threads too. There is no space for anything to move around in a properly made cell, it’s pretty much a long roll of tightly packed films end to end.

” Disassembly of cheap 18650 battery”:Disassembly of cheap 18650 battery

Disassembly of some UltraFire batteries

Disassembly of UltraFire 9900mAh 18650 battery