I have a ROM0 GS, that has the original battery inside that hasn't leaked (yet). I would like to replace it, but was thinking about cutting the leads close to the battery, soldering wires to the exterior of the unit, and maybe putting a battery holder outside for quick replacement. Can you use, say 3 NiCads as a replacement, which would be 3.6v? That way they could be charged every so often, and replaced. Does the GS charge the battery when the power is on? If not, this wouldn't be hard at all, it so, maybe put a diode inline to prevent the charging current from reaching the batteries. I did a search on here, but didn't see any other posts. Thanks.