I bought one of these cheapies probably three seasons ago, and it’s still going strong. It probably doesn’t last as long on a charge, but I usually get a day at the track out of it.
I bought 3 cheapies off Ebay over the winter. They just dont seem to last very long at the track, 5 or 6 starts is all they are good for. I was wondering if the more expensive ones last longer. I guess for the price I could have half a dozen of these charged in the trailer and just swap them after a few starts.
If class rules allow it, use a Lithium Ion battery off of e-bay. Weights about 1 pound and seems to last as long and start as well as a standard bat. Cost about $80. Recharges ultra fast. Should last forever. Been using one for 2 years on an X-125t with no issues.
I never had much luck with the cheep batteries. They are fine as a backup battery in an emergency exit sign but not built for the abuse of a race track. Took most back to the store the first day after they were used at as track. Purchase batteries designed to run TAG. Recommend the 9ah over the 7.2.
I’ve run the Power Patrol 9ah (Interstate Brand) on a Leopard for 1/2 a season. I thought it did fine. Its true that they aren’t designed for the abuse of a kart, but they’re cheap enough at my dealer cost that I didn’t mind. Batteries that are designed for ATVs or Motorcycles will last longer, for sure.