Group 24 batteries are lead-acid or AGM batteries standardized by the Battery Council International (BCI). Measuring approximately 10.25″ L x 6.8″ W x 8.9″ H, they offer 70-85 Ah capacity and 600-800 cold cranking amps (CCA). Their balanced size-power ratio makes them ideal for automotive, marine, RV, and solar applications. Key features include vibration resistance, spill-proof designs, and compatibility with deep-cycle use.
What Is a Group Size 24 Battery?
How Do Group 24 Battery Dimensions Compare to Other Groups?
Group 24 batteries have standardized dimensions of 10.25″ (L) x 6.8″ (W) x 8.9″ (H), making them 15-20% smaller than Group 27 and 31 batteries. This compact size allows installation in tight engine compartments while maintaining 70-85 amp-hour capacity. Unlike smaller groups like 35 or 51R, Group 24 provides sufficient power for mid-sized vehicles without excessive weight (typically 40-55 lbs).
The dimensional optimization of Group 24 batteries enables unique installation advantages. In crossover vehicles like the Subaru Outback, technicians can mount these batteries vertically or horizontally in irregularly shaped compartments. Marine applications benefit from the reduced footprint when powering fish finders and navigation systems. Compared to Group 31 batteries, the 2.5″ shorter length makes Group 24 ideal for European car models with transverse engine layouts. Recent innovations include tapered cases that improve heat dissipation in confined spaces while maintaining BCI-standard external dimensions.
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 |
| Battery Group | Length (in) | Width (in) | Height (in) |
|---|---|---|---|
| 24 | 10.25 | 6.8 | 8.9 |
| 27 | 12.06 | 6.8 | 8.9 |
| 31 | 12.95 | 6.8 | 9.4 |
How Do Group 24 Batteries Perform in Extreme Temperatures?
In cold climates (-20°C), AGM Group 24 batteries retain 85% CCA vs. 70% for flooded. High heat (50°C) reduces flooded battery life by 50% compared to AGM’s 25% loss. Arctic-grade versions use thickened electrolytes and carbon-enhanced plates to prevent freezing. Desert variants feature electrolyte circulation systems and heat-deflecting cases.
Recent field tests demonstrate Group 24 AGM batteries maintain 78% starting power at -30°C when paired with synthetic fiber separators. In desert conditions, modified valve systems regulate internal pressure during rapid temperature swings from 5°C nights to 55°C days. Dual-purpose marine versions incorporate temperature-compensated charging ports that automatically adjust voltage based on ambient readings. Users in extreme environments should prioritize batteries with:
- Carbon-infused lead plates
- Multi-stage pressure relief valves
- Ceramic-coated terminals
| Temperature Range | CCA Retention | Cycle Life |
|---|---|---|
| -30°C to 25°C | 82-95% | 1,100 cycles |
| 25°C to 50°C | 74-88% | 800 cycles |
“Modern Group 24 AGMs have revolutionized marine power systems. Their ability to handle deep discharges from trolling motors while resisting sulfuric acid stratification makes them 40% more efficient than traditional flooded batteries in marine applications. The latest carbon-foam versions push cycle life beyond 1,500 cycles.”
– Marine Power Systems Engineer, Johnson Battery Technologies
FAQs
- Can Group 24 Batteries Power Inverters?
- Yes. A 100Ah Group 24 AGM battery can support 1,200W inverters for 45-60 minutes at 50% discharge. For continuous use, pair multiple batteries in parallel.
- How Often Should Group 24 Batteries Be Replaced?
- Flooded: 3-5 years. AGM: 5-7 years. Solar applications may extend AGM life to 10 years with proper charge control (14.1-14.6V float).
- Are Group 24 Batteries Aviation-Approved?
- Yes. Specialized AGM versions meet FAA TSO-C173 standards for small aircraft, featuring nickel-cadmium terminals and pressurized cases for altitude changes.