Hi!
I bought this Battery:
“ MODEL 582535 SP5 3.7V 600mAh Rechargeable Battery For tachograph papago F300 “
It did not work (no charge process).
Then, I used the small PCB from the old (orginal Marshall) battery and soldered it with the new battery, replacing the pcb that came with it.
Now, everything works fine - yeah !!
No guarantee though that this procedure is safe and works for you, too!
Good luck and have fun!
Volker