I have now completed my first PS2 battery-to-supercap conversion, an early-1990's GG-1, going from an old 2.4-volt NiCad to one of the 2.5F 5-volt supercapacitors that GRJ recommended above. Took about 5 minutes, apart from getting the shell off and back on. I simply plugged the leads from the supercap into the socket on the charging port harness into which the batteries had been plugged. I did put insulating sleeves on the supercap leads and some Super 88 tape to assure they stayed in place. I picked the GG-1 because I don't run it often.
At about the same price as a replacement battery, or less, this is a viable alternative for consideration. I did notice that until it fully charged up, about a minute, the sound volume was very low, which I understand is normal.
Does anyone out there in forumland know when MTH switched from NiCad to NiMH in the upgrade kits? I'm trying to guess how old this battery is, which has given no problems whatsoever.
