The Eternal Lithium 16V 40Ah Battery is specifically designed for powering graphs and forward-facing sonar on boats, kayaks, or for ice fishing. With a cutoff voltage over 13V, it ensures consistent high voltage, keeping your picture quality crystal clear. While it currently requires the Esword BMS app for Bluetooth monitoring (available via email download for Android), an all-in-one app is in development. This battery offers reliable, dedicated power for enhanced imaging and seamless fishing experiences.

SPECIFICATIONS

WARRANTY

WEIGHT

11.44 lbs

SIZE

10.23" x  6.57" x 8.26

STORAGE CAPACITY

40 ampere hours (Ah). Eternal Lithium batteries deliver reliable, consistent power throughout the entire 40 amp hours. Unlike traditional SLA batteries, Eternal Lithium LiFePO4 batteries feature a flat voltage curve, ensuring steady power output as they discharge. This means you’ll experience consistent performance right down to the final drop of energy.

BLUETOOTH CAPABLE

Yes

VOLTAGE

17.5V

ENERGY

640Wh 

TERMINALS

M8

LIFECYCLES (BATTERY LIFESPAN)

Up to 80% capacity for 6,000 cycles under recommended conditions—compared to just 500 cycles for typical SLA batteries. Eternal Lithium batteries offer exceptional longevity, making the cost per use only a fraction of that of traditional batteries.

OPERATING TEMPERATURE

Built for tough and extreme environments, Eternal Lithium batteries outperform SLA and other lithium options. With optimal operating temperatures ranging from -4°F to +140°F (capable of reliable performance down to -20°F), these batteries are designed to withstand harsh conditions. Note: avoid charging below 32°F for best results.

DISCHARGE

40a max continuous discharge. The flat discharge voltage curve provides a 75% bigger capacity then a SLA 50Ah battery.

CHARGE

Peak charge acceptance 30A max for one minute. 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.

Experience the Eternal Lithium Advantage

The Eternal Lithium 16V 40Ah Battery provides stable, high voltage for clear sonar imaging, ideal for graphs and forward-facing sonar on boats and kayaks.

USD : 99.8