Don't confuse amps and amp*hours. GC2 golf cart batteries are in the 200+ amp*hour capacity. Most aren't rated for cranking amps but I'd presume they are more than capable of several hundred amps. I've actually had pretty good luck with flooded GC batteries as house batteries. I just put 2 X-power 31 series in my Mack. $400 each. They were rated the best for high current cranking (1000+ CC amps) and were close to the best in amp*hours. Replaced 2ea 31 series AGMS that were no longer up to snuff after 5 years. Sears PM-1 that were supposedly re-badged Odyseys. One was down to about 1/2 of spec amps and one about 3/4. Single batt could no longer cranks the Cummins. I have 2 flooded 6v's in series tied to batt #2 in parallel. The GC's are 5 years old and still pass the toaster style batt tester that supposedly pulls 125 amps.