Quick answer: The best 8 volt golf cart battery for most 48-volt carts is the Trojan T-875, rated at 170 Ah (20-hour) and 63 lb on Trojan’s own spec page, at $1,579.99 to $1,639.99 for a six-pack in Walmart marketplace listings. On a budget, Sam’s Club’s Duracell GC8 at $129.88 each puts a full set of six at $779.28 before tax and core fees, less than half the Trojan price. A 48V cart with six batteries needs six 8-volt units; US Battery lists the Club Car DS and Precedent among the carts built that way.
Eight-volt batteries are the standard flooded lead-acid choice for 48-volt carts with six batteries under the seat. They look almost identical to the 6-volt batteries in a 36-volt cart, which is exactly why owners order the wrong ones. The bigger shopping problem is the spec sheets: 8-volt runtime is measured at a different amp draw than 6-volt runtime, and at least one big-box listing prints a number that can’t be right. This guide compares the five 8-volt batteries we would actually put in a cart in 2026, with specs pulled from manufacturer and retailer pages checked on October 29, 2026.
Best 8 volt golf cart batteries at a glance
| Battery | Best for | Type | 20-hr capacity | Weight | Price each | Set of 6 |
|---|---|---|---|---|---|---|
| Trojan T-875 | Best overall | Flooded | 170 Ah | 63 lb | About $263-$273 in a 6-pack | $1,579.99-$1,639.99 |
| Duracell GC8 (Sam's Club) | Best value | Flooded | Not reliably listed | Not listed | $129.88 | $779.28 |
| Interstate 9-GC8-UTL (Costco) | Best warehouse-club spec sheet | Flooded | 160 Ah | 61 lb | In-warehouse only | Varies by club |
| Trojan T-890 | Most capacity | Flooded | 190 Ah | 69 lb | $292-$488 | $1,754-$2,928 |
| Duracell Ultra GC8 AGM (Batteries Plus) | Best no-watering (AGM) | Sealed AGM | 170 Ah | 76.1 lb | $329.99-$379.99 | $1,980-$2,280 |
Prices are per battery before sales tax and core charges. “Set of 6” is what a six-battery 48-volt cart needs.
1. Trojan T-875 — Best Overall
Trojan T-875 8V Flooded Deep-Cycle Battery (GC8)
- Trojan's spec page lists the T-875 at 145 Ah at the 5-hour rate, 155 Ah at 10 hours, 170 Ah at 20 hours and 189 Ah at 100 hours, 63 lb, and 117 minutes of runtime at a 56-amp draw (295 minutes at 25 amps).
- It is the 8-volt sibling of the T-105 in our 6 volt battery guide, part of the same Signature Line as the T-105, and it comes in four terminal styles, so it drops into most GC8 trays without new cables.
- Walmart marketplace six-packs were listed at $1,579.99 and $1,639.99, which works out to about $263-$273 per battery.
- Trojan lists self-discharge at 5-15% per month. Ask for the date code and skip batteries that have sat in a warehouse since spring.
The batteries are a pick-up job at most stores, but the small parts that keep a lead-acid pack healthy (a hydrometer, terminal protector, a watering kit) ship easily, so keep your cart rolling with a free 30-day Amazon Prime trial and get them in two days.
2. Duracell GC8 (Sam’s Club) — Best Value
Duracell Golf Car Battery, Group Size GC8 (Sam's Club)
- Sam's Club lists it at $129.88, which makes a six-battery 48V set $779.28 before tax and the state core fee. That is less than half the price of a Trojan T-875 set.
- It comes with a 12-month free replacement warranty, per the Sam's listing.
- The listing's spec fields contradict each other: the "Volts" field reads 6, another line says 12V, and the description calls it an 8-volt battery. Check the label in the club before you load six of them on a cart.
- No reliable amp-hour or runtime figure is published, so you can't compare it on paper with the Trojan or Interstate numbers. That is the only reason it isn't our top pick.
3. Interstate 9-GC8-UTL (Costco) — Best Warehouse-Club Spec Sheet
Interstate 8 Volt Golf Cart Battery, Part 9-GC8-UTL (Costco item 850984)
- Costco's listing publishes real numbers: 160 Ah at the 20-hour rate, 135 Ah at the 5-hour rate, 277 minutes of reserve capacity at 25 amps, and a 61 lb weight.
- Costco states that golf cart batteries can't be shipped "due to HAZMAT compliance requirements," so this is a warehouse pick-up, and the price isn't published online.
- A $15 refundable core charge per battery is added at the register, $90 on a six-battery set unless you bring the old ones back.
- The listing also claims 110 minutes at 75 amps, a figure that doesn't add up (see the runtime trap below). Compare this battery on its 20-hour and 5-hour numbers instead, where it gives up about 6-7% to the T-875.
4. Trojan T-890 — Most Capacity
Trojan T-890 8V Flooded Deep-Cycle Battery (GC8)
- Trojan rates it at 155 Ah at 5 hours, 175 Ah at 10 hours, 190 Ah at 20 hours and 211 Ah at 100 hours, with 132 minutes at 56 amps and 340 minutes at 25 amps.
- That is about 12% more 20-hour capacity than the T-875 in the same case size, at a cost of 6 extra pounds per battery (69 lb vs 63 lb, or 36 lb across a full set).
- Prices spread widely: A1 Solar Store listed it at $292.29 with limited stock, while Continental Battery listed the MasterVent version at $487.99 for store pickup.
- Worth it for lifted carts, 6-seaters, hilly neighborhoods or carts that pull a trailer, where the extra amp-hours show up as range.
5. Duracell Ultra GC8 AGM (Batteries Plus) — Best No-Watering
Duracell Ultra 8V 170Ah Sealed AGM Golf Cart Battery (Batteries Plus SLIGC8AGM)
- A sealed, spill-proof AGM battery rated at 170 Ah with 360 minutes of reserve capacity, 76.1 lb, in the GC8 size, per Batteries Plus.
- Batteries Plus listed it between $329.99 (on sale from $349.99) and $379.99 depending on the store, plus a refundable core deposit of up to $27, with a 12-month free replacement warranty.
- No watering and no acid on the battery tray. Trojan's maintenance guide puts AGM self-discharge under 3% per month versus up to 15% for flooded, which helps carts that sit for a season.
- Your 48V charger needs an AGM profile, and you pay for the convenience: a set of six costs roughly $1,980-$2,280, more than a Trojan T-875 set.
The 56-amp trap: 8-volt runtime is measured differently
Our 6-volt guide compares batteries on “minutes at 75 amps,” because that is how 6-volt golf cart batteries are rated. Trojan rates its 8-volt batteries at 56 amps and 25 amps instead, so the T-875’s 117 minutes can’t be compared with the 6-volt T-105’s 115 minutes. US Battery is the one maker that publishes both rates, and its numbers show how much the test current matters: its 170 Ah US 8VGC XC2 runs 118 minutes at 56 amps but only 82 minutes at 75 amps, about 30% less.
| Battery | 20-hr rate | 5-hr rate | Minutes at 75 A | Minutes at 56 A | Minutes at 25 A |
|---|---|---|---|---|---|
| Trojan T-875 | 170 Ah | 145 Ah | Not listed | 117 | 295 |
| Trojan T-890 | 190 Ah | 155 Ah | Not listed | 132 | 340 |
| US Battery US 8VGC XC2 | 170 Ah | 133 Ah | 82 | 118 | 325 |
| US Battery US 8VGCHC XC2 | 183 Ah | 147 Ah | 95 | 136 | 365 |
| Interstate 9-GC8-UTL (Costco) | 160 Ah | 135 Ah | 110 as listed | Not listed | 277 |
Sources: Trojan product pages, US Battery’s 8-volt data sheet, Costco item 850984, all checked October 29, 2026.
Costco’s 110-minute figure is the one that doesn’t fit. Running 110 minutes at 75 amps means delivering about 137 Ah in under two hours, which is more than the 135 Ah the same listing gives at the slower 5-hour rate. Lead-acid batteries deliver less, not more, when they’re drained faster. US Battery’s 155 Ah US 8VGCE XC2 is rated at exactly 110 minutes at 56 amps, so the Costco number is most likely a 56-amp figure with the wrong label. Line it up against the 56 A column, not the 75 A one.
Six 8s, four 12s or eight 6s: same 48 volts, different range
A 48-volt cart can be built three ways, and the battery count changes how much energy you carry. Using Trojan’s own 20-hour ratings:
| 48V layout | Example battery | Pack energy (20-hr rate) | Pack weight |
|---|---|---|---|
| Six 8-volt | Trojan T-875 (170 Ah) | 8.2 kWh | 378 lb |
| Four 12-volt | Trojan T-1275 (150 Ah) | 7.2 kWh | 340 lb |
| Eight 6-volt | Trojan T-105 (225 Ah) | 10.8 kWh | 496 lb |
Six 8-volt batteries hold about 13% more energy than four 12-volt batteries for 38 lb more weight, which is why most six-battery 48V carts never switch. Trojan’s spec page lists the T-875 at 1.51 kWh, but that figure uses the 100-hour rating (8 V × 189 Ah); at the more realistic 20-hour rate it is 1.36 kWh per battery.
Before you buy: make sure you need 8-volt batteries
- Six batteries in a 48V cart = 8-volt. US Battery lists the Club Car DS, Precedent, 2in1, 2Plus2, Cargo, Professional and XF models among the carts that take six GC8 8-volt batteries.
- Four batteries in a 48V cart = 12-volt, such as the Club Car Precedent Champion per US Battery. Six batteries in a 36V cart = 6-volt, covered in our 6 volt golf cart battery guide.
- Count the vent caps. Each lead-acid cell makes about 2 volts, so a 6-volt battery has three caps, an 8-volt battery has four and a 12-volt battery has six. It’s the fastest check when the labels are worn off, because 6V and 8V golf cart batteries share the same case size.
- Check resting voltage. A fully charged 8-volt battery reads about 8.4-8.6 volts at rest. Our battery tester guide covers load testers that handle 8V, and notes which popular digital tester doesn’t.
How to choose an 8 volt golf cart battery
- Replace all six. A series string is only as strong as its weakest battery, and one new battery mixed with five worn ones gets over-worked. Budget for a full set.
- Size the charger to the battery. Trojan’s rule is a charge rate of 10-13% of the 20-hour rating, about 17-22 amps for a 170 Ah T-875 set or 19-25 amps for a 190 Ah T-890 set. US Battery puts a full recharge from empty at 9-12 hours. Our golf cart charger guide covers 48V smart chargers, including AGM-compatible models.
- Equalize flooded batteries. US Battery’s data sheet recommends an equalizing charge once a month for batteries in active use, which keeps the four cells inside each battery balanced.
- Don’t run them flat. Trojan’s guidance is that discharges of 50% or less are best and 80% is the maximum. Going deeper on a regular basis is the quickest way to shorten pack life, as our battery lifespan guide explains.
- Plan for the core charge. Costco adds $15 per battery and Batteries Plus up to $27, so a six-battery set carries $90-$162 in deposits unless you bring the old batteries.
- Keep up with water. Flooded batteries need distilled water after charging, not before. Our battery maintenance checklist covers the routine, and a single-point golf cart battery watering kit makes it a two-minute job.
- Swap tired cables 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 8-volt batteries costs about $780 at the low end (Sam’s Club Duracell GC8), around $1,600 for Trojan T-875s and up to roughly $2,280 for sealed AGM. A 48-volt lithium battery costs more up front, but it needs no watering, takes a couple hundred pounds off the cart and usually outlasts two or three lead-acid sets. If you’re keeping the cart for many years, price a conversion in our best lithium golf cart battery guide before buying another lead-acid set. If you plan to sell the cart in a year or two, a fresh set of 8-volt batteries is the cheaper move.
The bottom line
For a six-battery 48-volt cart you plan to keep, the Trojan T-875 is the 8-volt battery to beat: 170 Ah at the 20-hour rate, 63 lb and a spec sheet that publishes every rating. If you want the cheapest decent set, Sam’s Club’s Duracell GC8 at $129.88 each, or Costco’s Interstate 9-GC8-UTL (160 Ah, $15 core), costs about half as much, as long as you pick them up yourself and read the label. The Trojan T-890 adds about 12% more capacity for heavy-use carts, and the sealed Duracell Ultra GC8 AGM is the pick if you never want to add water again. When you compare runtime, compare minutes at the same amp draw: 8-volt batteries are rated at 56 amps, not the 75 amps used for 6-volt batteries.