The Monster Marine Lithium 12V 120Ah Battery is a lightweight powerhouse, ideal for powering 12V electronics or trolling motors. Weighing just 33 lbs, this Group 31 battery offers advanced Bluetooth technology for easy monitoring of voltage and capacity via your smartphone. Built with Lithium Iron Phosphate (LiFePO4) technology, it delivers twice the power, weighs 60% less, and lasts 4 times longer than traditional lead-acid batteries. Installation is quick and simple with a plug-and-play design. Wire up to three batteries in series for 24V or 36V systems, making this battery versatile and efficient. Compatible with a wide range of AGM chargers, it’s a perfect upgrade for your marine setup.

SPECIFICATIONS

WARRANTY

WEIGHT

33lbs

SIZE

13″ (L) x 6.77” (W) x 8.66” (H)
Group 31 equivalent

STORAGE CAPACITY

120 ampere hours (Ah). Monster Marine Lithium batteries deliver reliable, consistent power throughout the full 120Ah capacity. Unlike traditional SLA batteries, Monster Marine Lithium LiFePO4 batteries feature a flat voltage curve, ensuring steady power output as they discharge. This advanced design provides uniform performance, giving you dependable energy all the way to the last drop.

Bluetooth Capable

Yes

VOLTAGE

12.8V 

ENERGY

1560 Wh

TERMINALS

F12 Bolt

LIFECYCLES (BATTERY LIFESPAN)

Retains up to 80% capacity for 5,000 cycles under recommended conditions—far surpassing the 500 cycles of typical SLA batteries. Monster Marine Lithium batteries deliver exceptional longevity, reducing the cost per use to a fraction of traditional battery options.

OPERATING TEMPERATURE

Built for rugged and extreme conditions, Monster Marine Lithium batteries outperform SLA and other lithium options. With an optimal operating range from -20°F to +140°F and reliable performance down to -20°F, these batteries are designed to thrive in tough environments. Note: For best results, avoid charging below 32°F

DISCHARGE

120 A max continuous discharge, 350 A max pulse. The flat discharge voltage curve provides a 75% bigger capacity then a SLA 50Ah battery.

CHARGE

100a max, 14.4V recommended, 15V max Please note: this battery should be charged using a LiFePO4 compatible charger. A SLA charger may work, but will reduce performance and lifespan of the battery.

INCLUDES ACTIVE BMS PROTECTION

Equipped with an advanced circuit, this battery ensures cell balancing, low and high voltage cutoff, short circuit protection, and high-temperature protection. These features boost performance and significantly extend the battery's lifespan.

Unlock the Monster Marine Lithium Advantage

The Monster Marine Lithium 12V 120Ah Battery delivers lightweight, long-lasting power with Bluetooth monitoring and plug-and-play installation, ideal for trolling motors.

USD : 96.59