Rechargeable batteries for Compilot II and iCube II

Compilot II and iCube II use exactly the same rechargeable battery. Both instruments have the same form factor and you may even charge them in each others table stands (TV-Link en iCube II Hub resp.)!
For those of you looking for original battery replacements, in eBay search for “IP462539” and you will currently (2020/6/10) find 2 suppliers for the original batteries!
Replacing them is easy: just remove the 2 screws with a Torx T6, remove the cover without using force and carefully remove the small plug from the board.