A Group 24 battery is a standard automotive battery with dimensions of approximately 10.25″ (L) x 6.8″ (W) x 8.875″ (H). It typically weighs 40-50 lbs, delivers 70-85 Ah capacity, and features SAE or JIS terminals. Commonly used in cars, boats, and RVs, it balances power output, size, and compatibility with mid-sized vehicles.
What Distinguishes Group 24 Terminal Types and Configurations?
Group 24 batteries use SAE (top-post) terminals in North America and JIS (smaller diameter) terminals in Asian vehicles. Some dual-purpose marine models include threaded studs for accessory connections. Terminal placement (left/right positive) varies by manufacturer—measured from the front-facing label—requiring verification to match vehicle cable lengths and orientations.
SAE terminals measure 0.625″ in diameter and accommodate standard clamp-style connectors found in most American-made vehicles. JIS terminals (0.55″ diameter) prevent accidental cross-connection in Japanese imports like Toyota or Honda. Marine configurations often combine top posts with 5/16″-18 threaded studs for connecting bilge pumps or navigation systems. Terminal orientation patterns follow two primary configurations: Type A (positive on left when facing label) and Type B (positive on right), with 87% of automotive applications using Type A. Always verify polarity markings against your vehicle’s existing battery to avoid reverse connection damage.
Top 5 best-selling Group 14 batteries under $100
| Product Name | Short Description | Amazon URL |
|---|---|---|
|
Weize YTX14 BS ATV Battery  |
Maintenance-free sealed AGM battery, compatible with various motorcycles and powersports vehicles. | View on Amazon |
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UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
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Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
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Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
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Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
| Terminal Type | Diameter | Region/Application |
|---|---|---|
| SAE (Top Post) | 0.625″ | North American vehicles |
| JIS (Top Post) | 0.55″ | Asian imports |
| Marine Stud | 5/16″-18 | Boats/RVs |
How Does Group 24 Compare to Group 27, 34, and 35 Batteries?
Group 27 (12% longer) offers higher Ah capacity for RVs. Group 34 (shorter/narrower) fits compact trucks with higher CCA. Group 35 (similar height) uses JIS terminals for Asian hybrids. Group 24 strikes a middle ground—20% lighter than Group 31 but with 15% less cycle life than lithium equivalents.
When comparing physical dimensions, Group 27 batteries extend to 12.06″ length versus Group 24’s 10.25″, providing 20-25% more electrolyte volume for increased capacity. Group 34 models sacrifice 1.3″ in length but maintain cold cranking performance through tighter plate spacing. In practical applications, Group 24 serves well for daily drivers requiring 70-85Ah, while Group 27 better supports RV house banks needing 90-110Ah. Weight differentials are significant—Group 24 AGM batteries average 50lbs compared to Group 31’s 65lb counterparts. For hybrid vehicles, Group 35’s optimized terminal placement aligns with Japanese engine compartments but offers 10% less reserve capacity than Group 24.
| Group | Length | Typical Use | Weight Range |
|---|---|---|---|
| 24 | 10.25″ | Mid-size vehicles | 40-52lbs |
| 27 | 12.06″ | RVs/Marine | 55-68lbs |
| 34 | 8.94″ | Compact trucks | 38-45lbs |
“Modern Group 24 AGM batteries now support 3D vibration resistance up to 15G—critical for off-road applications. Their charge acceptance rates (5C vs 0.3C in flooded) make them ideal for regenerative braking systems. However, users should verify BMS compatibility when pairing lithium Group 24s with older alternators.”
– Automotive Power Systems Engineer
FAQ
- Can a Group 24 battery power a 2000W inverter?
- Yes—lithium Group 24 batteries (200Ah+) can sustain 2000W loads for 1 hour at 80% efficiency. Lead-acid versions would require parallel configurations.
- Do all Group 24 batteries have the same terminal orientation?
- No—positive terminals can be left or right. Always check manufacturer diagrams against your vehicle’s cable layout.
- How long do AGM Group 24 batteries last in solar applications?
- Properly cycled AGM versions last 4-7 years vs 2-5 years in automotive use, depending on depth of discharge (maintain above 50% SOC).