Quick answer: The best 6 volt golf cart battery for most owners keeping their cart long-term is the Trojan T-105, rated at 225 Ah (20-hour) and 62 lb per Trojan’s own spec sheet, at about $243-$300 per battery. If price matters more, Sam’s Club’s Duracell GC2 at $119.88 each puts a full 36-volt set of six at about $719 before tax and core charges, roughly half the cost of a Trojan set. A 36V cart needs six 6-volt batteries; if your 48V cart has six batteries, they are 8-volt units and this page is not your fit.
Most golf carts still leave the factory on flooded lead-acid batteries, and 6-volt GC2-size batteries are the most common replacement for 36-volt carts. The catch is that shopping for them is unlike buying almost anything else for a cart: they weigh close to 60 lb each, most retailers will not ship them, capacity ratings are not measured the same way across brands, and every one of them carries a refundable core charge. This guide compares the five 6-volt batteries we would actually put in a cart in 2026, with the specs pulled from manufacturer and retailer listings checked on October 28, 2026.
Best 6 volt golf cart batteries at a glance
| Battery | Best for | Type | 20-hr capacity | Weight | Price each | Set of 6 |
|---|---|---|---|---|---|---|
| Trojan T-105 | Best overall | Flooded | 225 Ah | 62 lb | $243-$300 | $1,458-$1,800 |
| Duracell GC2 (Sam's Club) | Best value | Flooded | Not listed | Not listed | $119.88 | $719.28 |
| Interstate GC2-UTL (Costco) | Best warehouse-club spec sheet | Flooded | 210 Ah | 58 lb | In-warehouse only | Varies by club |
| US Battery US 2200 XC2 | Most capacity | Flooded | 232 Ah | 62-64 lb | About $233 | $1,400 (6-pack) |
| Mighty Max ML230-6GC2 | Best no-watering (AGM) | Sealed AGM | 230 Ah | Not listed | $269.99 | $1,619.94 |
Prices are per battery before sales tax and core charges. “Set of 6” is what a 36-volt cart needs.
1. Trojan T-105 — Best Overall
Trojan T-105 6V Flooded Deep-Cycle Battery (GC2)
- Trojan's own spec sheet lists the T-105 at 185 Ah at the 5-hour rate, 207 Ah at 10 hours, 225 Ah at 20 hours and 250 Ah at 100 hours, 1.50 kWh, 62 lb, and 115 minutes of runtime at a 75-amp draw.
- It has been the reference 6-volt golf cart battery for decades, and Trojan sells it in four terminal styles, so it drops into almost any GC2 battery tray without cable changes.
- Pricing spreads widely by seller: one solar retailer lists a single T-105 at $242.90, while Walmart marketplace 4-packs work out to roughly $274-$300 per battery. A T-105 Plus adds Trojan's flip-top SureVent caps and a built-in water-level indicator.
- Trojan lists self-discharge at 5-15% per month for this battery, so ask for the date code and avoid units that have sat on a shelf for months.
The batteries themselves are heavy freight, but the small parts that keep a lead-acid pack healthy (terminal protector, a hydrometer, a watering kit) are not, so keep your cart rolling with a free 30-day Amazon Prime trial and get them in two days.
2. Duracell GC2 (Sam’s Club) — Best Value
Duracell Golf Car Battery, Group Size GC2 (Sam's Club item 347700)
- Sam's Club lists it at $119.88 (prices can vary in club), which makes a full six-battery 36V set $719.28 before tax and core fees — roughly half the price of a Trojan set.
- The listing does not publish an amp-hour or runtime figure, which is the main reason it is not our top pick: you can't compare it on paper with the Trojan or Interstate numbers.
- Sam's also sells a sealed Duracell AGM GC2 at $217.72 if you want a no-watering battery from the same store.
- Like every warehouse-club golf cart battery, it is a pick-up purchase. Call your club first, since stock varies by location.
3. Interstate GC2-UTL (Costco) — Best Warehouse-Club Spec Sheet
Interstate 6 Volt Golf Cart Battery, Part 9-GC2-UTL (Costco item 850284)
- Costco's listing publishes real numbers: 210 Ah at the 20-hour rate, 175 Ah at the 5-hour rate, 105 minutes of reserve capacity at 75 amps, and a 58 lb weight.
- Costco states the battery cannot be bought online or shipped "due to HAZMAT compliance requirements" and may only be stocked at some warehouses, so its price isn't published online.
- A $15 refundable core charge per battery is added at the register, which is $90 on a six-battery set unless you bring the old batteries back.
- On Costco's own numbers it gives up about 7% of the T-105's 20-hour capacity (210 vs 225 Ah) and about 9% of its runtime at a 75-amp draw (105 vs 115 minutes).
4. US Battery US 2200 XC2 — Most Capacity
US Battery US 2200 XC2 6V Deep-Cycle Battery (GC2)
- Rated at 232 Ah at the 20-hour rate and 258 Ah at the 100-hour rate, 1.54 kWh, in the same GC2 footprint as the T-105, per the spec Columbia Vehicle Group publishes for the US 2200 batteries in its carts.
- The heaviest battery here at 62-64 lb depending on the source; more lead is a big part of where the extra capacity comes from.
- A Walmart marketplace 6-pack was listed at $1,400 (down from $1,570), about $233 per battery, which undercuts most T-105 pricing.
- Fewer local stockists than Trojan or the warehouse clubs, so check freight and the seller's core-return policy before ordering.
5. Mighty Max ML230-6GC2 — Best No-Watering (AGM)
Mighty Max ML230-6GC2 6V 230Ah Sealed AGM Golf Cart Battery
- A sealed AGM battery rated at 230 Ah, listed at $269.99 at Home Depot, with dual terminals for GC2 battery trays.
- No watering and no acid spills. Trojan's maintenance guide puts AGM-type self-discharge under 3% per month, versus up to 15% for flooded batteries, which suits a cart that sits between seasons.
- Unlike the warehouse-club batteries, Mighty Max's sealed 6-volt units are sold through retailers that ship (Home Depot, Walmart and Zoro all list the brand), so this is the practical pick if there is no warehouse club or battery dealer near you.
- Your charger must have an AGM charge profile. An older flooded-only charger can over-charge a sealed battery, and a sealed battery can't be topped up with water to recover.
The amp-hour trap: why the same battery has four capacity ratings
Battery capacity depends on how fast you drain it. Trojan rates the same T-105 at 185 Ah if drained over 5 hours and 250 Ah if drained over 100 hours, a 35% swing on one battery. Most labels and store listings quote the flattering 20-hour figure, but a golf cart pulls far harder than that, closer to the 5-hour rate or the “minutes at 75 amps” figure. When you compare two batteries, compare the same rating:
| Battery | 5-hr rate | 20-hr rate | 100-hr rate | Minutes at 75 A |
|---|---|---|---|---|
| Trojan T-105 | 185 Ah | 225 Ah | 250 Ah | 115 |
| Interstate GC2-UTL (Costco) | 175 Ah | 210 Ah | Not listed | 105 |
| US Battery US 2200 XC2 | Not listed | 232 Ah | 258 Ah | Not listed |
A seller that quotes a 100-hour number against a competitor’s 20-hour number makes its battery look about 11% bigger than it is.
Before you buy: count the batteries
- Six 6-volt batteries = 36 volts. This is the classic setup on older EZGO TXT, Club Car DS and Yamaha G-series carts.
- Six batteries in a 48V cart are 8-volt units, not 6-volt (a common Club Car Precedent setup); our 8 volt golf cart battery guide compares the Trojan T-875, Costco and Sam’s Club options for those carts. Four batteries in a 48V cart are 12-volt units. A 6-volt battery won’t fit either pack.
- Eight 6-volt batteries = 48 volts, used on some carts and custom builds.
- Read the label on one battery and the voltage stamped on your charger before ordering. Our golf cart battery tester guide lists healthy resting voltages for 6V, 8V and 12V batteries if the labels are worn off.
How to choose a 6 volt golf cart battery
- Replace the whole set. A series string is only as strong as its weakest battery, and a new battery mixed with worn ones gets over-worked. Budget for six (or eight), not one.
- Plan for the core charge. Costco adds $15 per battery and Batteries Plus lists $27, so bring the old batteries with you or return them within the store’s window to get that $90-$162 back.
- Check the date code. Flooded batteries lose 5-15% of their charge per month on the shelf, according to Trojan, and Trojan recommends a boost charge once a stored battery reaches 70% or less. Fresh stock matters.
- Match your charger. Trojan’s sizing rule is a charge rate of 10-13% of the 20-hour amp-hour rating, which works out to about 23-30 amps for a 225 Ah battery. Our golf cart charger guide covers 36V and 48V smart chargers, including AGM-compatible models.
- Don’t run them flat. Trojan’s guidance is that discharges of 50% or less are best and 80% is the maximum safe discharge. Regularly going deeper is the fastest way to shorten a lead-acid pack’s life, as our battery lifespan guide explains.
- Keep up with water. Flooded batteries need distilled water added after charging, not before. The battery maintenance checklist walks through the routine, and a single-point golf cart battery watering kit turns a 20-minute job into a two-minute one.
- Replacing cables or trays at the same time? Corroded cables are common on an old pack. See our battery cable guide and battery box guide.
Lead-acid or lithium?
A new set of six 6-volt batteries costs roughly $720 at the low end (Sam’s Club Duracell) to $1,800 at the high end (Trojan T-105). Lithium costs more up front, but it needs no watering, cuts a couple hundred pounds and usually outlasts two or three lead-acid sets. If you’re keeping the cart for many years, price out a conversion in our best lithium golf cart battery guide before you buy. If you plan to sell the cart in a year or two, or the cart only sees light use, a fresh lead-acid set is the cheaper choice.
The bottom line
For a cart you plan to keep, the Trojan T-105 is still the 6-volt battery to beat, with a transparent spec sheet (185-250 Ah depending on rate, 62 lb) and decades of golf cart use behind it. If you want the cheapest good set, Sam’s Club’s Duracell GC2 at $119.88 each or Costco’s Interstate GC2-UTL (210 Ah, $15 core) cost roughly half as much, but you’ll need to pick them up in person. The US Battery US 2200 XC2 has the most capacity on paper, and the sealed Mighty Max ML230-6GC2 is the choice if you never want to add water again — as long as your charger has an AGM mode. Whichever you buy, count your batteries first: six 6-volt batteries make a 36-volt cart, and six batteries in a 48-volt cart are 8-volt units, which we cover in our best 8 volt golf cart batteries guide.