/diy/ - Do It Yourself

>>2625979
>I removed the tape and measured at the terminals, pic related.
If there's voltage on the pack's output, and it's wired into the board, then that voltage must be on there somewhere. Can you provide a clearer photo of where those wires are going into the PCB?
>I would take a wild guess, that the protection-circuit is already integrated into the bl-5c
It should, yeah. Usually it's under the black plastic shroud the also houses the out-facing terminals.
>similarly to conventional rechargeable AA(A) batteries
If you mean those lithium ion cells that pretend to be NiMH/alkaline, then yeah. Most rechargeable Nickel cells don't bother with protection since that chemistry tolerates a lot of abuse.