Replace battery in Kobo libra H2O

I believe it's not too difficult from what I've found. Batteries are PR-158098N, with possible variants on connectors, such as no plug, 2 wire plug, or 4 wire plug. They are available from quite a few places these days, such as AliEx.

The waterproof coating may be damaged when soldering, but that's a separate problem.

I believe the back comes off fairly easy with spudger or guitar pick type prying.

See these links (link1 link2) for reference and pictures.

I'm currently investigating a MicroUSB change to USBC on these units. A bit more involved disassembly is required here. The battery alone seems pretty easy.