Golf cart batteries and charging

A golf cart’s battery pack is a third or more of what the cart is worth, so this is the category where ten minutes of reading saves the most money. Everything in this guide comes back to three questions.

Which voltage you have

Count the batteries and read the label on one. Six 6-volt batteries makes a 36-volt cart. Six 8-volt or four 12-volt batteries makes a 48-volt cart; so does eight 6-volt, which Yamaha offers as a long-range option on the Drive and Drive2. Then confirm against the make: Club Car DS went from 36V to 48V in 1995, EZGO’s TXT went to 48V in 2010, and every Precedent, RXV and Drive is 48V. The fitment finder will tell you from the make, model and year if you cannot get to the batteries.

Do not guess from the charger, because chargers get swapped. Do not guess from the motor either; 36V and 48V motors look the same from the outside.

Lead-acid or lithium

Flooded lead-acid is the cheap, known quantity. A full set is about $900 to $1,500, it wants water once a month and a full charge after every use, and it gives four to six years if you do both. It weighs 350 to 400 pounds and you lose range steadily as it ages.

Lithium (LiFePO4) costs about $1,500 to $2,800 for a 48V pack, weighs 80 to 120 pounds, needs no water, holds its voltage until it is nearly empty, and is typically warrantied for eight to ten years. The cart is noticeably quicker off the line because the pack is lighter and the voltage does not sag.

The battery upgrade calculator runs the ten-year arithmetic with your miles and prices. For most owners who drive a few times a week it comes out close to even on cost, with lithium winning on everything else. For a cart that goes out twice a month in summer and sits on a charger the rest of the year, a good flooded set is still the sensible buy.

If you are going lithium, the lithium battery guide is where to start, with separate pages for 48V packs and 36V packs. If you want the tray, cables and charger in one box, the conversion kit page covers that.

If you are staying with flooded, pick by battery size: 6-volt sets for 36V carts and eight-slot 48V carts, 8-volt sets for six-slot 48V carts, and 12-volt sets for four-slot carts. Trojan is the brand most owners name first; the Trojan page says when it is worth the premium and when it is not.

The charger has to match

A 36V charger will not charge a 48V pack, and a lead-acid charger will usually refuse a lithium pack or finish it badly. Match three things: voltage, chemistry and the plug on your cart. The charger guide is organized exactly that way.

Keeping a set alive

Most dead sets die of neglect rather than age. How long batteries last explains what shortens a set; maintenance is the monthly routine; testing tells you whether it is one bad battery or the whole pack; and charging covers how long a full charge takes and why you should never leave a flooded set half-charged.

If you are replacing cables or rewiring a pack, battery cables and the 48V wiring diagram are the two pages to open side by side.

What a set costs

Before you shop, how much golf cart batteries cost puts numbers on every option, including installation and core charges, so the price on a listing is not the surprise it often is.