The best price I could find for the Interstate batteries are $108.00 each.
I have found some "equivelant" (so they say) at Auto Zone for $79.95 each.
http://www.autozone.com/autozone/cat...hnson+Controls
I don't know if they are the same or not, or if they will even work.
It is my understanding the Trojans are the Rolls Royce of Cart batteries. That is what is in the cart now and they will not hold a charge. Of coarse I don't have to have the Trojans, as long as the others will work properly and not burn out the electric motor. I don't know the answer to that one.
The Trojans are suppose to have more deep cycle(s) than the Interstate(s), but they are still only expected to last 3-5 years. The ones at Auto Zone have a 3 year full replacement warranty. I could replace then twice for what the Trojans cost. If they'll work.