/diy/ - Do It Yourself

>>2499220
So, tell me, how you charge them, is CC/CV to 3.5V at <0.2C good? I generally charge li-ion to 4V, so do you think I should aim for 3.3V? At what voltage would you consider them discharged, typical and conservative values?

I buy these cheap little protection circuits for li-ion off aliexpress, I see there are some for li-ip too, which is good, I think there'll be li-ip in a future project of mine soon. What are the smallest size cells you've come across? I have hundreds of 13mm x 40mm li-po batteries from vape pens that people drop like cigarette butts, but they all contain a 1340 550mAh li-po battery