What Are The Specs Of Group 24F Battery?
Group 24F batteries are standardized lead-acid batteries measuring ~10.25″ x 6.8″ x 8.9″, with top-mounted terminals (right-side positive). They deliver 550–850 CCA (Cold Cranking Amps) and 70–85 Ah (Amp-hours), optimized for mid-sized vehicles like sedans, SUVs, and light trucks. Flooded, AGM, or EFB chemistries cater to diverse needs. Pro Tip: AGM variants handle vibration better, ideal for stop-start systems.
What are the physical dimensions of a Group 24F battery?
A Group 24F battery measures 10.25 x 6.8 x 8.9 inches (LxWxH), with terminals offset toward the front. This BCI-standardized size ensures compatibility with battery trays in vehicles like Toyota Camrys or Honda Accords. Top-post terminals (SAE posts) dominate, though some AGM models offer side terminals. Weight ranges from 40–55 lbs depending on plate thickness and electrolyte type.
Group 24F’s compact design balances power and space efficiency, fitting snugly in engine compartments with limited clearance. For example, a 24F AGM battery weighs ~48 lbs, offering 800 CCA—enough to start a V6 engine at -18°C. Pro Tip: Always measure your tray before upgrading; a 24F’s 0.5″ extra height versus Group 35 may cause fit issues.
Mechanically, these batteries use polypropylene casings resistant to acid leaks and heat. Transitioning to AGM technology, some 24F models now include absorbent glass mats to prevent electrolyte stratification, enhancing lifespan in high-demand applications.
| Feature | Group 24F | Group 35 |
|---|---|---|
| Length | 10.25″ | 9.06″ |
| Terminal Position | Front-offset | Centered |
| Typical CCA | 750 | 650 |
What electrical specs define a Group 24F battery?
Group 24F batteries prioritize high CCA (550–850) and reserve capacity (100–120 minutes). Voltage stays at 12.6V nominal, with a 20-hour rate capacity of 70–85 Ah. AGM variants achieve lower internal resistance (3–5 mΩ) versus flooded (8–10 mΩ), boosting charge acceptance for start-stop systems.
Cold Cranking Amps (CCA) determine starting power in frigid conditions—a 24F’s 800 CCA outperforms smaller groups like 35 (650 CCA) for reliable winter starts. Reserve Capacity (RC) indicates how long the battery can power essentials if the alternator fails. For instance, a 24F with 110 RC runs headlights for nearly two hours. Pro Tip: Pair AGM 24F batteries with smart alternators to prevent overcharging.
Transitioning to real-world use, a Honda Odyssey’s 24F battery sustains 150A during engine cranking. But what if you need more cycles? Opt for EFB (Enhanced Flooded Battery) versions, offering 2x cycle life over standard flooded types. Tables below compare key specs:
| Parameter | Flooded | AGM |
|---|---|---|
| CCA | 700 | 810 |
| Cycle Life | 300 | 500 |
| Cost | $120 | $200 |
Which vehicles use Group 24F batteries?
Group 24F batteries power Asian and domestic vehicles including Toyota Highlanders, Ford Explorers, and Nissan Altimas. Their terminal placement suits engines with front-side electrical harness routing. Marine/RV applications also use 24F for trolling motors or auxiliary power, leveraging their high Ah capacity.
In automotive use, the 24F’s front-offset terminals align with Japanese-designed wiring layouts, minimizing cable stress. For example, a Lexus RX 350 uses this group to support its 3.5L V6’s 180A starter. Transitioning to marine use, anglers prefer AGM 24F batteries for their spill-proof design and vibration resistance. Pro Tip: Check OEM manuals—some European brands label 24F as DIN 66Ah. But why not use Group 31? Size constraints—24F saves 30% space while delivering 80% of Group 31’s capacity.
Battery Expert Insight
FAQs
No—terminal positions differ. Group 24 has centered posts; 24F’s are front-offset, risking cable strain or shorts.
How long do Group 24F batteries last?
3–5 years average. AGM variants last 5–7 years with proper maintenance—avoid deep discharges below 50%.
Are Group 24F batteries sealed?
Only AGM/EFB types are sealed. Flooded 24F requires periodic water topping.