
I already saw two good ones: One of 2000mAh, and the other 2500mAh, but I'm not sure about the thickness 5/5.5mm and the options:
https://akkuplus.de/Einzelzelle-5050...mAh-Li-Polymer
3,7 Volt - 2000mAh [7,40Wh] - System: Li-Polymer - ca. 50 x 60 x
5mm -
with PCB (Protection Circuit Module???

)
https://akkuplus.de/Einzelzelle-5055...mAh-Li-Polymer
Would also be nice with 2500mAh [9,25Wh], System: Li-Polymer, ca. 73 x 55 x
5,5 mm -
without this
PCB.
So far - before some levels of learning - the meaning of
PCB was always the
Polychlorinated Biphenyls for me

. Great in what I actually get involved

Do I really need this
PCB-Stuff, or I am (resp. my Inkpad3 is) happier without it?
Kind regards
Matthias