So, i've been having trouble saving games on my 3-in-1 ever since i bought it. All the gba games i've tried load fine, but no matter how i patch them, or which program i use to load them, they don't save. When i first got it, they used to save sometimes, and other times, the save would either be corrupt, or have dissapeared completely. I've decided this is a battery problem. Would it be likely that the battery was running out, and so would save sometimes and not others? If it is a battery fault, i have a CR2032 battery spare that is also 3V, as is the CR1220 battery used in the 3-in-1. The batteries are sized differently, but i think i could get the bigger CR2032 to fit in the casing. Would this battery work at all? Are there any differences between the 2 batteries, apart from size, and would these affect whether or not it would work? Any help that can be offered is much appreciated.