The most common battery group sizes are Group 35 and Group 24F, widely used in sedans, SUVs, and light trucks. Group 35 batteries power vehicles like Honda Accords and Subarus, while Group 24F fits Toyota Camrys and older Nissans. These sizes balance compact dimensions with sufficient cranking power, making them compatible with popular automotive designs.
What Is a Group Size 24 Battery?
How Do Battery Group Sizes Work?
Battery group sizes standardize physical dimensions, terminal locations, and power capacities. The Battery Council International (BCI) assigns numbers like “Group 35″ based on length, width, height, and post orientation. For example, Group 35 measures 9.06″ x 6.88″ x 8.88” with top-mounted terminals. This system ensures batteries fit securely in trays and connect properly to vehicle wiring systems.
Manufacturers must adhere to BCI’s 0.25″ tolerance rule for group size compliance. Terminal types vary between groups – Group 24F uses SAE posts while Group 48 employs side terminals. Recent updates to BCI standards (2024 Edition) introduced three new group sizes for electric vehicle auxiliary systems. The table below shows key specifications for common group sizes:
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 |
|
UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
|
Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
|
Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
|
Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
| Group Size | Length (in) | Width (in) | Terminal Type |
|---|---|---|---|
| 35 | 9.06 | 6.88 | Top Post |
| 24F | 10.25 | 6.88 | SAE Post |
| 48 | 10.94 | 6.88 | Side Post |
Which Vehicles Use Group 35 Batteries?
Group 35 batteries power Honda Civic (2016-2023), Subaru Outback (2010-2024), and select Ford F-150 models. These mid-sized batteries provide 640-650 CCA (cold cranking amps), ideal for compact to midsize vehicles. Their reverse terminal configuration prevents cable strain in tight engine compartments. Always verify compatibility using your owner’s manual or BCI’s online lookup tool.
Recent market analysis shows Group 35 accounts for 38% of replacement batteries in North America. Its versatility extends to marine applications, with 12V deep-cycle versions powering trolling motors. Automotive technicians recommend checking group size compatibility when upgrading electrical systems – improper fits can void warranties on new infotainment systems.
Are AGM Batteries Changing Group Size Trends?
Absorbent Glass Mat (AGM) technology enables compact group sizes with higher power density. Group 48 AGM packs 760 CCA in hybrid/electric vehicles, replacing bulkier traditional sizes. BMW and Mercedes now use AGM-optimized Group 49 batteries with dual-purpose deep cycling. However, AGM units cost 30-40% more—consumers must weigh longevity against upfront costs when choosing group sizes.
The shift to AGM batteries has created new form factors like Group 47H (Hybrid) featuring 15% smaller footprints. These batteries support advanced vehicle features including:
- Start-stop ignition systems
- Regenerative braking storage
- 48V mild hybrid systems
Automakers are gradually phasing out conventional group sizes, with projections indicating 45% of new cars will use AGM-specific groups by 2026. This transition requires updated battery trays and charging systems in older vehicles.
“The shift toward start-stop systems and 48-volt mild hybrids is driving demand for specialized group sizes like H6 (48) and H7 (49). We’re seeing 18% annual growth in AGM-compatible sizes, while traditional lead-acid groups plateau. By 2027, 60% of new vehicles will require group sizes that support regenerative braking energy storage.”
— Dr. Elena Torres, Automotive Electrification Specialist
FAQs
- Can I Use a Higher CCA Battery in My Car?
- Yes, provided physical dimensions match. Higher CCA improves cold starts but doesn’t harm electrical systems. Avoid exceeding 20% over OEM specs without consulting a mechanic.
- Do Electric Cars Use Standard Group Sizes?
- No. EVs use proprietary lithium packs, but their 12V accessory batteries often adopt Group 96R or other compact sizes. Tesla’s low-voltage systems use modified Group 51R batteries.
- How Long Do Group 35 Batteries Last?
- Average lifespan is 3-5 years. AGM versions last 4-7 years. Extreme temperatures reduce longevity by 30-40%. Regular voltage checks optimize performance.