FunDeckHermit

Hi Alex, Electrical Engineer and battery expert here that watched the whole video with some cringe. I have got a few helpful tips for your next li-ion experiments: Chargers are not the same as Adapters Chargers can handle overcurrent and go into constant current mode Adapters are destroyed Lithium battery should be called Li-ion battery The cells were not "3500mA"-ones, they were 3500mAh ones. 7S3P -> 3P7S because parallel first You should get a lab-power supply like this one: Manson HCS-3204 1-60V 0-10A You should get a wire stripper like this one: link You could try creating your own massive powerbank or even spotweld 18650 cells for your next experiments. You could re-salvage cells from laptop batteries or even run a computer on 18650-cells.