The GC's are designed to take a pounding. From going out with my dad when he played golf, the carts took a beating. Everyone thought they were Dale Earnhardt or Richard Petty. There were two speeds, dead stop and wide open. I listened to dad talk to the guy who maintained them and he said they would have to change the batteries out every 3 years or so. But that was due to the beating they took. This was also back in the early 70's so not sure how much of an improvement they have made over the years.
When I was active duty Air Force, we had dozens of them on the base. These too would take a beating (again the 2 speed syndrome)...The batteries lasted for several years under less that optimal conditions (Phoenix Arizona summers to name one). We would weekly check the batteries for corrosion, and wash them off and check the water levels.
I currently have two of the Sams Club GC2's in my truck camper and have had absolutely no problems with them. Just take care of them, keep the water levels up and they should last you for years.
Just my 2 cents...