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I have a 2011 EZGO RXV. 3 years ago it came with 4x12V Trojan batteries. I was down to 15 miles range (from 20 when new) so I had a Roypow lithium battery installed 4 weeks ago. S51105 - 51V, 105 Ah, 5.3 kwh.

I heard about Roypow from the Buggiesgonewild forum. Tried to find a dealer, and finally connected with STM Golf Carts in Ocala. They have installed quite a few of the 56AH batteries, which are fine for the smaller communities but not good enough for The Villages. The Roypow website says 20-30 miles for the 56AH battery and 40-50 for the 105AH battery.

The 56AH battery is 19 pounds lighter and $600 cheaper. Anyone in The Villages needs to get the 105AH battery.

I had a speedometer installed by Jack, the guy who advertises every Monday in the paper, so I have a really accurate odometer.

The battery beeps 10 times when it reaches 20% capacity. Both times I had gone 53 miles, which works out to 66 mile range. Currently I'm at 44 miles with 4 bars showing which means I am between 30 and 40% capacity. The battery meter is reasonably uniform. I go from 6.5-7.1 miles before it drops 1 bar.

I have not gone more than 56 miles yet. Haven't had the opportunity. Battery will beep 10 times about a mile after it's down to 20%, then again in 2 miles.

Installation kits are available for the popular carts, which consist of the support tray and the power connector to the cart, which you can see in the pictures below. STM always has the small batteries available. Mine was only the 2nd 105AH battery they installed. Both the power cord and the cord to the cart are 9½' long.

The Villages Golf Carts offer a 120AH lithium battery for the EZGO carts and expect 50-55 miles range. I haven't read any reviews with actual range. Earlier this year it was a $4000 upgrade for lithium. Cart World charged a $2000 premium for a small lithium battery in Club Cars.

I have a previous post on the Evolution with a larger battery. It just goes to show you can't judge a battery by the Amp rating alone.

I took 4 hours to bring the battery up to full charge after going 56 miles. The charger output is 1300 watts so the input is probably 1500 watts. 1500 watts x 4 hours x $0.11 /kwh = 66 cents to go 56 miles, or 1.2 cents/mile. (1.5 if you use over 1000 kwh a month). By comparison, the power cost for my Tesla is 3.7 cents/mile.

Cost for my battery was about $2550 all in - battery, charger, and battery meter installed.

I can tell a difference in braking with 300 pounds of battery weight removed. I think the suspension works a little better too. Acceleration is quicker but top end didn't change, since that is set not to exceed 20 mph or so.

Bottom line: I am very pleased with the battery and also STM Golf Carts.