Group 31 Lithium Battery Pack

LiTech Power LiFePO4 Group 31 Lithium Battery Pack

El Group 31 Lithium Battery Pack is a high-capacity LiFePO4 battery designed as a direct replacement for traditional Group 31 lead-acid batteries. With a stable 12.8V output, 173Ah capacity, and integrated smart BMS, it delivers reliable, long-lasting power for marine, solar, and off-grid applications.

El LRL12173 Group 31 Lithium Battery Pack features a 4S1P LiFePO4 configuration with a total energy of 2214.4Wh. Compared to AGM or GEL Group 31 batteries, it offers higher usable capacity, faster charging, and a significantly longer cycle life.

Equipped with multiple temperature sensors and an intelligent heating function, this battery ensures safe charging and stable performance in both high- and low-temperature environments. The IP65 waterproof enclosure and integrated M8 terminals make it especially suitable for marine and outdoor installations.

Bluetooth connectivity allows real-time monitoring of voltage, capacity, temperature, and system status, improving system control and operational safety.

Key Features

• Group 31 form factor, drop-in replacement

• 12.8V LiFePO4 chemistry with 173Ah capacity

• Smart BMS with multi-temperature protection

• Intelligent heating for cold environments

• IP65 waterproof housing for marine use

• Bluetooth monitoring via mobile devices

• Maintenance-free, plug-and-play design

Typical Applications

• Marine batteries (boats, yachts, trolling systems)

• Group 31 replacement for AGM / lead-acid

• 12V solar energy storage systems

• RV and off-grid power solutions

• Backup power for industrial equipment

OEM & Custom Group 31 Battery Solutions

LiTech specializes in OEM lithium battery solutions and offers full customization for Group 31 Lithium Battery Pack projects, including voltage range (10V–14.6V), capacity, communication protocols, heating systems, and enclosure design. With in-house BMS development and strict QC procedures, we deliver fast, reliable, and scalable custom battery solutions.

LiTech Power makes better battery –  LiFePO4 10V 173Ah Battery – LiFePO4 12.8V 173Ah battery pack – LiFePO4 14.6V 173Ah battery pack.