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What Is TotalPro Group 24 Marine And RV Battery?
The TotalPro Group 24 Marine and RV Battery is a deep-cycle lead-acid or lithium-ion battery designed for marine vessels and recreational vehicles. It provides reliable power for trolling motors, onboard electronics, and auxiliary systems, with a focus on vibration resistance and extended discharge cycles. Its Group 24 size (approx. 10.25″ L x 6.8″ W x 8.9″ H) balances capacity and space efficiency for compact installations.
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What distinguishes Group 24 batteries in marine/RV applications?
Group 24 batteries prioritize vibration resistance and deep-cycle endurance for marine/RV use. Their standardized dimensions ensure compatibility with existing battery trays, while optimized plate thickness (4–6 mm in lead-acid variants) prevents sulfation during partial state-of-charge operation common in off-grid scenarios.
Marine-grade Group 24 batteries feature enhanced corrosion protection through thick terminal coatings and sealed valve-regulated designs. Lithium-ion versions like LiFePO4 deliver 2,000–5,000 cycles at 80% DoD, outperforming lead-acid’s 300–500 cycles. Pro Tip: Always secure Group 24 batteries with compression plates in mobile applications—road vibrations accelerate plate degradation in flooded models. For example, a lithium Group 24 battery weighing 26 lbs can replace a 60-lb lead-acid unit, freeing 34 lbs of payload capacity in trailers.
How does capacity vary between lead-acid and lithium Group 24 batteries?
Lead-acid Group 24 typically offers 75–85 Ah, while lithium variants reach 100–120 Ah due to 99% usable capacity vs. lead-acid’s 50% safe discharge threshold. Advanced lithium models employ prismatic cells with 3.2V nominal voltage, enabling 12.8V systems through 4S configurations.
Lead-acid batteries suffer from Peukert’s effect—capacity drops 40% at 25A discharge versus rated 5A tests. Lithium maintains stable capacity up to 1C rates. A 100Ah lithium battery delivers 1280Wh (12.8V×100Ah), compared to lead-acid’s 510Wh (12V×85Ah×50% DoD). Pro Tip: When upgrading to lithium, recalculate your power needs—the actual usable energy triples. Always verify BMS compatibility with existing charging systems to prevent overvoltage faults.
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| Parameter | Lead-Acid | Lithium |
|---|---|---|
| Cycle Life | 300 cycles | 2000+ cycles |
| Weight | 45–60 lbs | 22–30 lbs |
| Efficiency | 80% | 98% |
What charging specifications apply to Group 24 marine/RV batteries?
Charging voltages differ significantly: lead-acid requires 14.4–14.8V absorption, while lithium needs 14.2–14.6V with precision ±0.5% regulation. Temperature compensation (-3mV/°C/cell for lead-acid) isn’t required for lithium, simplifying solar charge controller setups.
Three-stage charging remains critical—bulk (constant current), absorption (constant voltage), and float. Lithium batteries benefit from faster bulk charging at 0.5–1C rates versus lead-acid’s 0.2C limit. For example, a 100Ah lithium battery can safely accept 50A charging current, reaching 80% SOC in 48 minutes. Pro Tip: Use marine-certified chargers with IP67 ratings when installing in bilge areas—humidity accelerates terminal corrosion in standard units.
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FAQs
Yes—a 100Ah lithium Group 24 can run a 1000W inverter for 1+ hours at full load. Ensure continuous discharge rates don’t exceed BMS limits (typically 100A).
Are Group 24 batteries AGM or flooded?
Both exist—AGM versions dominate marine applications due to spill-proof construction, while flooded remain cost-effective for stationary RV use.
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