[MorTech]

Yes the two batteries are built differently but they have the same chemistry...The lead-acid chemistry is the point. In fact, the deep cycle plates are more robust.

According to Trojan white papers, max capacity takes about 50 charge cycles to achieve, and holds steady thru the life of the battery and then drops off pretty abruptly the last few months of life. You will notice your battery gauge dropping rapidly over about the final 2 months or so. It isn't that hard to miss and the chances of someone being stranded by this are near zero (If you do get stranded and have a cell phone and credit card, call one of the many cart battery suppliers and they will come out to you and install a new set of batteries, clean everything up, and take the old batteries away in just a few hours and you will be good to ho for another 6 years. While they work, you can walk thru the villages and chat with people. heck, it is highly likely that someone will even offer you a beer! There is no problem with being stranded for a few hours). At 30% depth of discharge, you should see 2500 charge cycles..30% is about 25 miles on a Yamaha AC. I doubt many people drive that far per day (I do go on long joyrides but the joy leaves me after 30 miles on a golf cart). Take into account some longer than 25 mile distances traveled per day and the 90F+ summer heat (keep in mind with an electric cart, there is no hot engine and the battery compartment has a nice seat cushion to block the sun's heat so you don't see smoldering temperature like you do in an automobile/gas cart engine compartment (I doubt the electric cart's battery compartment temperature is ever much above ambient) that takes away charge cycles, and you should see 6 years easily on the batteries. I have never seen or heard of more than 7 years on a lead-acid battery set though...So maybe 2500 charge cycles or 7 years whichever come first is more like it.