Hello! I've recently piked up a Demon Front single PCB version. I've removed the factory battery to avoid leaking. Anyway I would like to keep the settings and high score save functionality, so I would like to install a coin cell holder on it. I've seen a couple of mod for the regular PGM board with carts, but here the circuit seems to be different. I would like to know how to disable the charging circuit to use a regular CR2032 not rechargeable battery. Thanks!