DIY USB charger ready!

[sunny]

scroll backwards to jan 2022 in this thread

[vinceskahan]

Look carefully at the photo on DIY USB charger ready! - #119 by ding.b and it should be pretty obvious

[farzadb]

This post will help you.

Can you help me identify the pads for charging the battery?

I’ve seen the posts about a DIY charging solution but I can’t figure out which of the pads at the base are positive and negative and don’t want to assume there’s reverse polarity protection so does anyone know which of the pads on the base are + and -? I know it’s the two outside pins used to charge the battery but not the polarity . Picture attached. Thanks. [IMG_4386]