I haven't used a 2F cartridge slot yet. Among these models, which ones use button batteries, and which ones use batteries that are prone to leakage?
I only saw from the lower PCB diagram that the MV2B has the worst expandability, but the batteries in the PCB diagram have been removed, so I can't see what the original batteries look like.
I only saw from the lower PCB diagram that the MV2B has the worst expandability, but the batteries in the PCB diagram have been removed, so I can't see what the original batteries look like.
