I just installed a RoyPow 105AH lithium battery in my 2012 ez-go and it is absolutely great. It has 10 bars to show how much power is used and I played 18 holes and did’t use one bar. I did’t need additional speed, but it is definitely faster. I paid 2750 including sales tax and I had it done by STM golf carts in Ocala and they were very nice to deal with. So if you need batteries and if your looking something that will improve the performance and longevity of your golf cart ride, I would definitely recommend the lithium battery