Costco GC2 spec
I decided to replace the old GC2 batteries (4 years old). Costco's GC2's are now labeled Interstate Batteries. There isn't much data on the battery, just RC = 107. A "real" Interstate battery that ...
Forum Discussion
For flooded battery charging, think 14.8 limit. Modulate by time. 2 GC220 in series can eat 70 amps without burping. So charge until a smart charger insists on proving it's stupidity then let a fixed voltage charger take over from there. When the pfsmart charger defaults to (?) The batteries will not be accepting anywhere near seventy amps. I haven't screwed around with US Battery GC's for while but believe they would accept 30+ amps at 14.8 volts when the smart charge goes belly-up. An adjustable voltage 36 amp Megawatt costs $65 online. Connect it to a 4 hour or six hour wind up Intermatic timer and there you are.
A lot of folks are charging this way. It works. It's not very expensive and the Megawatt can be adjusted to 14.8 with a small screwdriver.
Or you can make the process unbearably difficult by overthinking it.
A lot of folks are charging this way. It works. It's not very expensive and the Megawatt can be adjusted to 14.8 with a small screwdriver.
Or you can make the process unbearably difficult by overthinking it.
