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

In this review the Power Queen 12.8V 100Ah LiFePO4 Group 24 battery earns a recommendation for users who want a compact, long-lived replacement for lead acid in RVs, small solar banks and marine house loads. The single biggest reason to buy is its combination of a Group 24 form factor that fits common battery boxes and an upgraded 100A BMS that protects the pack while delivering reliable usable capacity - a straightforward upgrade path from heavier, short-lived lead acid batteries.

Key Features

• Compact Group 24 fit: Sized to meet BCI Group 24 minimums so it installs easily into many existing battery boxes without modifying wiring.
• Grade-A LiFePO4 cells: Four high-quality cells give higher energy density and a lighter weight feel compared with lead acid alternatives.
• Upgraded 100A BMS: Built-in protection defends against overcharge, over-discharge, over-current, over-voltage and short circuits for safer operation.
• Long cycle life: Rated for thousands of cycles (up to 15000+ at 60% DOD), offering years of service and a 5-year warranty backing.
• Series and parallel support: Can be combined in series and parallel (up to 4P4S shown) to build larger systems up to 51.2V 400Ah for off-grid setups.
• Simple charging guidance: Recommended charge at 14.6V and around 20A yields a full charge in roughly five hours for consistent cycling.

Who It's For

This battery is well suited for RV owners, small boat or marine house battery banks, and homeowners building compact solar storage systems who need a drop-in Group 24 replacement with the advantages of lithium chemistry. Its light weight, long cycle life and compatibility with Group 24/27/31 boxes make it a convenient upgrade for anyone replacing lead acid while keeping existing mounting and wiring.

Those who need a dedicated engine starter battery should look elsewhere, since this unit is intended for energy storage loads rather than high-current engine starting applications. Also, installers who require extremely thin terminal hardware should follow the provided guidance about gaskets to avoid loose or overheated connections.

Pros & Cons

Pros

• Noticeably lighter and higher capacity retention compared with lead acid, improving usable energy on trips and off-grid use.
• Robust BMS and Grade-A cells provide dependable protection and long cycle life backed by a 5-year warranty.
• Fits common Group 24 boxes and can be used in parallel or series for scalable systems.
• Compatible charging profile and predictable charge time makes integration with solar charge controllers straightforward.

Cons

• Not intended or recommended as a starter battery for engines or golf carts, limiting one class of use.
• Terminal attachment may need gaskets or attention if mounting hardware is thinner than 2mm to prevent loosening or heating.

Specifications

Chemistry	LiFePO4 (Lithium Iron Phosphate)
Nominal Voltage	12.8V
Capacity	100Ah
BMS Rating	Integrated 100A BMS
Cycle Life	Up to 15000+ cycles @60% DOD (4000 @100% DOD)
Form Factor	BCI Group 24 (fits Group 24/27/31)
Recommended Charge	14.6V, ~20A (approx 5 hours at 20A)

Our Verdict

The Power Queen 12V 100Ah LiFePO4 Group 24 battery is a practical, cost-effective upgrade for RVs, marine house banks and compact solar systems that need long life and a drop-in form factor. Its Grade-A cells, 100A BMS and multi-thousand cycle capability make it strong value for users replacing lead acid, while installers should heed terminal attachment guidance for the best long-term reliability.

Frequently Asked Questions

Can this battery start an engine?
No. This unit is designed for energy storage and not recommended as a starter battery for engines or golf carts.

Will it fit my existing Group 24 battery box?
Yes. It meets BCI Group 24 minimum size and is intended to fit common Group 24 boxes and many Group 27/31 spaces.

How should I charge it?
Use a 14.6V charging voltage and around 20A for a full charge in roughly five hours; works with typical solar charge controllers when configured correctly.