Maintenance section of 36 manual: 5.3.3
The battery (capacitor) voltage , measured with voltmeter should indicate 3.5 to 4.2 volts when fully charged with battery switch open. There is no adjustment.

Either way it's soldered on to the mother board of main cabinet and have no idea (schematic) of which one it is.
Cool just saw your link so it can be replaced. That's a good thing.

Last edited by mc601; 10/29/14 10:39 AM.

mjc