Power Queen 12V 100Ah LiFePO4 Battery Group 24 - Compact Long-Life

Our review of the Power Queen 12V 100Ah LiFePO4 Battery finds it best suited for RV owners, marine users, and solar hobbyists who need a compact, long-lasting deep cycle battery that drops into a Group 24 footprint. The single biggest reason to consider this battery is its combination of high cycle life and lightweight compactness: with Grade-A LiFePO4 cells, an upgraded 100A BMS, and a design that fits BCI Group 24 boxes (while also accommodating Group 27 and 31), it provides consistent usable capacity and safety protections that make conversions from lead-acid straightforward.

Key Features

• BCI Group 24 fit: Designed to meet minimum Group 24 size so it replaces many lead-acid batteries without modifying existing mounting or wiring.
• Grade-A LiFePO4 cells: Four premium cells deliver stable energy density and reliable output for deep cycle use in RVs, trailers, and boats.
• Upgraded 100A BMS: Built-in battery management protects against overcharge, over-discharge, over-current, over-voltage, overload, and short circuits for safer operation.
• Long lifespan and cycle life: Rated for up to 10 years and thousands of cycles (4000@100% DOD; 6000+@80% DOD; up to 15000+@60% DOD) for a much longer service life than typical lead-acid batteries.
• Series and parallel support: Can be connected in series or parallel (up to a 4P4S 51.2V 400Ah bank) for larger installations or higher system voltages.

Who It's For

This battery is ideal for RV campers, small marine craft, and off-grid solar setups where space is limited but long run-time and long life are priorities. Users replacing Group 24 lead-acid batteries will appreciate the drop-in dimensions and lighter weight for the same nominal capacity.

It is not intended as a starter battery; the manufacturer advises against engine starting and golf cart cranking use. Those needing high cold-cranking amps or dedicated starter performance should choose a purpose-built starting battery instead.

Pros & Cons

Pros

• High cycle life and long service life deliver excellent long-term value for daily deep cycling.
• Compact Group 24 sizing lets owners upgrade to lithium without rewiring or new trays.
• Upgraded 100A BMS provides comprehensive protection for safe operation in mobile systems.
• Lightweight and good capacity make it easier to handle and transport than lead-acid equivalents.

Cons

• Not suitable as a starter battery; it is designed for energy storage and deep cycle use only.
• Charging recommendation (14.6V, 20A) means slower full-charge times on lower-output chargers unless settings are adjusted.

Specifications

Nominal voltage	12.8V
Capacity	100Ah (1280Wh)
Cell type	LiFePO4 (four Grade-A cells)
BMS continuous current	100A
Cycle life	4000 cycles @100% DOD; up to 15000+ cycles @60% DOD
Lifespan / warranty	Up to 10 years lifespan, 5 year warranty
Compatibility	BCI Group 24, fits Group 27 and 31 spaces

Our Verdict

The Power Queen 12V 100Ah LiFePO4 is a smart upgrade for anyone replacing Group 24 lead-acid batteries who wants longer life, lighter weight, and robust protection. It represents good value for RV, marine, and small solar applications where deep cycle performance, safety from the 100A BMS, and the ability to scale in series or parallel matter more than engine cranking capability.

Frequently Asked Questions

Can this battery start an engine?
No, this model is an energy storage deep cycle battery and is not recommended for starting engines or golf carts.

What charging voltage and current are recommended?
Charge at about 14.6V and 20A for a full charge; lower charger current will extend charge time accordingly.

Can I connect multiple units for higher voltage or capacity?
Yes, the battery supports series and parallel connections and can be configured up to 4P4S for a 51.2V 400Ah bank when wiring multiple units.