Ampere Time 25.6V 100Ah LiFePO4 Battery - Long Life, Built-in 100A BMS

In this review of the Ampere Time 25.6V 100Ah LiFePO4 Battery the bottom line is straightforward: it is a solid, long-lived house battery for RVs, campers, solar setups and marine use where safety and cycle life matter most. The reviewer found the battery's single biggest selling point is its combination of Grade A LiFePO4 cells and a built-in 100A BMS that deliver reliable protection and thousands of cycles, making it a compelling replacement for similarly sized lead acid batteries.

Key Features

• Grade A cells: The battery uses high-quality LiFePO4 cells that offer higher energy density and a stable flat discharge curve for predictable runtime.
• Built-in 100A BMS: Integrated protection prevents overcharge, over-discharge, over-current and short circuit events for safer installation indoors or outdoors.
• Long cycle life: Rated for 4000+ deep cycles and an expected 10 year lifetime, it outlasts typical lead acid options by years.
• Lightweight design: At roughly one third the weight of comparable lead acid batteries, the unit is easier to handle and install in vans and RVs.
• Wide operating temps and IP65: Charging and discharging temperature ranges and IP65 waterproofing make it suitable for many off-grid and marine environments.
• High efficiency: A flat discharge curve that holds usable voltage for up to 95% of capacity boosts usable run time for appliances and electronics.

Who It's For

This battery suits RV owners, overlanders, small off-grid solar systems and marine users who need a reliable deep cycle battery with long life and strong safety features. Installers and DIYers will appreciate the lightweight pack and IP65 rating that allow flexible mounting locations.

It is not intended as a starting battery for engines or to run golf carts, and buyers who require starter/cranking capability or specialized high-discharge applications should look for a purpose-built starter battery or a pack designed for those loads. Also, those who need series/parallel configurations beyond the supported limits should consult different models.

Pros & Cons

Pros

• High cycle life and 10 year expected lifetime provide long-term value over lead acid.
• Strong built-in 100A BMS offers comprehensive safety protections.
• Lightweight and IP65 waterproofing make installation flexible for RV, marine, and off-grid use.

Cons

• Not designed as a starting battery and should not be used for golf carts, which limits some applications.
• Some customers report mixed experiences with long term charge retention, so real-world holdover can vary by usage and charging setup.

Specifications

Our Verdict

The Ampere Time 25.6V 100Ah LiFePO4 battery is a practical choice for RV, camper, marine and small off-grid solar systems that prioritize long cycle life and built-in safety. For users replacing lead acid house banks it delivers clear weight and longevity advantages and represents good value when paired with an appropriate charger and system design.

Frequently Asked Questions

Can this battery be used as a starter battery?
No. The manufacturer specifies it is not for starting engines; it is designed as a deep cycle house battery.

How many batteries can be paralleled or put in series?
It supports up to a 4P2S configuration to build a 48V 400Ah system when using matching batteries.

Is it safe to mount indoors or outdoors?
Yes. The pack is IP65 and has a built-in BMS and no acid, which allows flexible indoor or outdoor mounting with attention to the recommended orientation limits.