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Gas golf carts commonly use one 12V starting battery. The exact vehicle, battery compartment, terminals and electrical rating decide the right replacement. A brand-wide answer such as “all E-Z-GOs take Group 26” can send you home with the wrong battery.
Start with the model, not the brand
Identify the cart from its serial plate and obtain its battery specification or parts lookup. An old battery is useful evidence of what was installed, but a previous owner may have fitted an unsuitable substitute.
For a concrete example, E-Z-GO's RXV EX1 EFI manual 10036460-E specifies a 12V U1 maintenance-free battery, 340 CCA and 41-minute reserve for the RXV/RXV Freedom configurations in its specification tables. That directly shows why a generic Group 26 recommendation cannot cover every E-Z-GO.
For Club Car and Yamaha, obtain the same model-specific answer before choosing a Group 70, 24, 24F or other battery. Each code describes a case size, not a fit for every model of a brand. Use the serial-number guide when the vehicle's identity is unclear.
Group 70, 26 and 24 dimensions
Battery Council International's chart lists maximum overall dimensions and terminal arrangements. It is a dimensional reference, not a golf-cart fitment catalogue.
| BCI group | Length | Width | Height | Distinction |
|---|---|---|---|---|
| 70 | 8 3/16 in | 7 1/16 in | 7 5/16 in | Side-terminal arrangement in the chart |
| 26 | 8 3/16 in | 6 13/16 in | 7 3/4 in | Top-post arrangement |
| 26R | 8 3/16 in | 6 13/16 in | 7 3/4 in | Reversed terminal arrangement |
| 24 | 10 1/4 in | 6 13/16 in | 8 7/8 in | Longer case |
| 24F | 10 3/4 in | 6 13/16 in | 9 in | Different terminal layout and envelope |
The actual product drawing matters too. Utility studs, terminal boots, cable bends and hold-down hardware need space. Never force a cable across the battery or substitute a hold-down that can contact the posts.
A half-inch difference that changes the fit decision
In an illustrative tray with 10 1/2 inches of usable length, the chart's Group 24 envelope leaves 1/4 inch. A Group 24F envelope exceeds the space by 1/4 inch. This calculation uses the BCI dimensions. Width, total terminal clearance and the securing bracket still need checking.
What an actual Onward owner reported
In a public Onward gas-battery discussion, Pacochu_18 described a roughly one-year-old cart whose battery had been drained by LED whip lights. The owner was searching for a Group 26-size replacement while trying to avoid major tray changes. Another participant, Federal-Alps6392, reported buying a $160 DieHard described as Group 70 with top terminals, cleaning corrosion and having a successful test ride.
These are separate reports, retrieved October 10, 2026. The second participant gave no cart model, part number or dimensions, and that gap is the lesson: a replacement recommendation needs both the cart identity and the exact battery, not just a successful installation somewhere else.
One fit checklist to take to the battery counter
Record or photograph:
- Vehicle model, year, serial number and engine variant.
- Required voltage, battery type, CCA and reserve specification from the correct manual.
- Existing battery part number and complete group code, including suffixes.
- Tray length/width, available height and the hold-down's contact points.
- Positive/negative positions, terminal hardware, cable reach and clearance with the seat/body installed.
- Any accessories and whether their wiring matches the vehicle's charging arrangement.
Ask the supplier to compare an exact battery drawing with those measurements. A higher starting-current rating does not fix wrong polarity, insufficient clearance or an unsecured case. A traction battery for an electric cart is a different purchase; see golf cart batteries.
Test the cause of repeated discharge
A battery can have adequate resting voltage yet fail under starter load. Have a battery shop or technician assess it using the battery and tester instructions, then check the vehicle's charging system and parked accessory draw. Do not keep replacing batteries while lights, corroded connections or charging faults remain unresolved.
The Onward report illustrates why the accessory history belongs on the service request. Write down whether the failure happens after parking, using accessories, or driving. For a service test involving cranking or a running engine, the exact manual must define immobilization and the neutral/service setup; run an engine only outdoors or in an approved ventilated service area. A generic “watch the voltage while cranking” instruction leaves too much unspecified.
See a cart that will not start and starter-generator symptoms.
Charging and replacement
The cited RXV EX1 manual prohibits jumper-cable starting because the cart can move when the engine starts. It specifies a compatible 12V charger rated 10A or less for a discharged battery and monthly checks during storage. Follow the installed battery's chemistry and charging instructions as well. For Club Car or Yamaha, use that model's manual.
The NOCO GENIUS5 is a 5A charger with separate 6V/12V and chemistry modes, as documented in NOCO's product and setup guidance. Compare it only for an identified gas cart's compatible 12V starting battery, with approval for the battery type and charging procedure. Select the correct 12V mode; do not use it across a 36V/48V traction pack or assume an individual 8V battery is supported. The Amazon listing was checked October 16, 2026. Repair or Force mode is not a substitute for diagnosing the repeated discharge.
See price on AmazonUse the exact vehicle procedure for disconnection, cable routing, terminal torque and securing the replacement. Shut down and secure the cart first; remove jewelry and keep sparks away from the battery. If the stock bracket, cables or terminal protection have been modified, have those changes corrected before putting the cart back into use.
Compare a complete local quote
Ask for the exact battery part number, warranty, installed price, tax, core deposit and core-return conditions. Compare equivalent quotes rather than paying for a chemistry upgrade that the cart's charging system does not support.
Use, storage, temperature, discharge and charging faults set battery life. Keep a dated installation record and test results rather than replacing on a fixed three-to-five-year schedule. A repair shop can check fitment and the recurring discharge problem together.
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