In uk.d-i-y Paul wrote:
Andrew wrote:
Is there anyway of getting inside the battery pack with a
dremel or similar and identifying what type of cells it
uses, and then sourcing them ?.

That's unnecessary. It's a single cell.
The entire rectangular thing, is a cell.

Yep, just like a Duracell AA the thing is a cell, there aren't cells hiding
inside.

In theory any lithium ion cell will do, but the trouble is finding one of
the right dimensions to fit, as they're typically custom to the specific
phone. Also there is probably a tiny PCB with a protection circuit inside,
and possibly some temperature sensing. This likely attaches to the other
terminal(s) and the phone may not turn on without it.

Theo