I have Trojan T105-AGM. The Star Dealer provided them when I bought the new cart last November. The cost was around 1,000.00 as I remember, more than the standard batteries but way less than lithium Ion. The only upside to the maintenance free is there is no watering or acid reflux
. There is no range advantage nor any longer life. Since I change carts every 5 - 6 years I assumed two battery change outs. One thing to consider if you go lithium ion is the warranty period and proration of cost. While they say they will last 10 years the full replacement warranty is significantly shorter after which the cost to replace is prorated on your usage. That might vary by manufacturer. I didn't see the value based on my buying schedule.