12V 100Ah LiFePO4 Battery Group 24 Size - Portable 1280Wh Power

In this review the HumsiENK 12V 100Ah LiFePO4 battery is evaluated as a compact, long-lived replacement for lead-acid batteries for RV, marine, and off-grid use; its single biggest reason to buy is the combination of high cycle life and lightweight Group 24 form factor that makes it practical for portable power systems. The reviewer found it well suited to DIY expandable 12V battery banks and mobile applications where weight, charge retention and fast charging matter, and notes the included smart BMS and robust safety certifications add confidence for repeated use.

Key Features

• High cycle life: Rated for 5000 cycles at 100% DOD, the battery promises a substantially longer usable life than typical lead-acid units.
• Compact Group 24 size: At roughly 8.2in x 6.6in x 10.2in and 23.2lbs, it saves space and weight in RVs and boats compared with equivalent lead-acid batteries.
• Built-in smart BMS: The integrated 100A BMS protects against overcharge, over-discharge, short circuit and overcurrent, improving safety and longevity.
• Fast charging support: Compatible with solar, generator and grid charging and capable of much faster recharge times than lead-acid alternatives.
• Wide operating range: Operates between -4F (-20C) and 158F (70C) with automatic low temperature shutdown for winter protection.
• Expandable system: Can be configured in series or parallel up to 48V and 20kWh, allowing flexible DIY power station builds.

Who It's For

This battery is aimed at RV owners, boaters, and off-grid campers who need a lightweight, high-capacity Group 24 replacement that can be stacked into larger banks. It is also a good match for hobbyists building portable power stations or replacing heavy lead-acid batteries in trolling motors and marine electronics.

It is less suitable for users who need integrated enclosure-based battery systems with a management app or certified commercial installations requiring specific third-party integrations; those buyers should look for systems with matched inverters or factory-configured packs.

Pros & Cons

Pros

• Long rated lifespan and high cycle count make it a cost-effective long-term option.
• Lightweight Group 24 footprint frees up space and reduces load on boats and RVs.
• Built-in 100A BMS and multiple safety certifications provide reliable protection.
• Flexible charging options and fast recharge capability improve usability off-grid.

Cons

• Screw terminal size drew mixed feedback from some customers, so installation hardware may need verifying before fitment.
• No dedicated app or external communication port is mentioned for advanced battery monitoring.

Specifications

Voltage	12V
Capacity	100Ah (1280Wh)
Cell chemistry	LiFePO4
Cycle life	5000 cycles at 100% DOD
Dimensions	8.2in x 6.6in x 10.2in
Weight	23.2 lbs (10.5 kg)
Built-in protection	100A smart BMS (over/under/temp/short)

Our Verdict

The HumsiENK 12V 100Ah LiFePO4 battery is a strong option for RV and marine users who want a durable, lightweight Group 24 replacement with fast charging and expandable system options; its long cycle life and built-in BMS deliver clear value for those replacing heavy lead-acid banks, though buyers wanting advanced remote monitoring should plan for external solutions.

Frequently Asked Questions

Can these batteries be connected in series or parallel?
Yes, they support series and parallel configurations for systems up to 48V and 20kWh, allowing flexible DIY setups.

What protections does the battery include?
It includes a built-in 100A BMS protecting against overcharge, over-discharge, overcurrent, short circuit and thermal limits, with automatic disconnects for extreme conditions.

How cold can this battery operate?
It operates down to -4F (-20C) and will automatically shut down below that temperature to protect the cells.