Outperform, outperform, and outlast the competition with the Lithium Pros ® M31150-S 12.8V Lithium-Ion Engine Starting Battery.

When the competition heats up and the fish bite, the last thing a professional angler needs to worry about is whether or not their marine starting battery has enough juice to last the day. Lithium Pros give tournament anglers peace of mind with power they can rely on all day. The new M31150-S 12V 150 Ah Marine Starting Battery gives anglers all the juice they need on the water.

With an impressive 1500 Marine Crank Amps (eq), the M31150-S has the most starting power of any battery in its class and will have no problem starting all conventional outboard motors on the market. Only one of Lithium Pros M31150-S Lithium-Ion batteries has as much power as two Traditional 12V Group 31 AGM lead-acid batteries with only ¼ the weight and half the space!

The M31150-S features one of the most advanced and fully integrated digital internal battery management systems in the marine industry, safely housed in a lightweight case. This system continuously monitors overtemperature, overcurrent, undercurrent, and short circuits. This automatically protects the battery from damage if a problem is detected, ensuring long battery life and trouble-free service.

Powered by high power Lithium Ion Phosphate (LiFePO4) chemistry and using only the best Lithium Ion cells, you won’t find more capacity in a battery that fits inside a standard Group 31 case. 360 minute reserve, the M31150-S is designed for the competitive angler who refuses to compromise on reliability, power, or battery life. It’s the starter battery Lithium Pros recommends for saltwater and freshwater tournament fishing, and especially for those anglers who need to simultaneously run multiple 12-inch charts and a front sonar. Since it has a higher discharge voltage than traditional lead-acid batteries, anglers no longer need to worry about their charts resetting during an engine start. Stay on the trail, and on the fish, all day long!

The M31150-S Lithium-Ion battery provides up to five times the cycle life with 80% DoD and recharges five times faster than traditional lead-acid batteries. Charging is easy and convenient, as it can be used with any charger compatible with existing 12V AGM and Gel batteries, including those for Mercury, Suzuki, Honda and Yamaha. The M31150-S battery meets Mercury’s September 19, 2022 specifications for a lithium-ion battery. And since lithium-ion batteries do not contain toxic chemicals or emit harmful gases, they are a better choice for the environment.

Lithium Pros M31150-S is the marine starting battery of choice for the professional angler who relies on fast starts, quality, reliability, and enough power to last from dawn to dusk.

M31150-S 12.8V 150 Ah Lithium Ion Engine Starting Battery Features:

  • Replace two Group 31 AGM batteries with one M31150-S Lithium-Ion battery!
  • High Power Lithium Ion Phosphate
  • Light
  • Keeps multiple charts larger than 30.5 cm (12 in) and the fore-end probe running simultaneously
  • Provides enough voltage across the discharge to prevent graphics from resetting
  • Advanced automatic internal digital battery management system
  • Does not emit harmful gases
  • Does not contain toxic materials.
  • Starts all conventional outboard motors
  • Recommended for both saltwater and freshwater tournament fishing
  • Can be charged with any 12V AGM battery charger without desulfation mode, with a float voltage of 13.5V or less and not exceeding 14.8V output
  • Meets Mercury September 19, 2022 specifications for a lithium-ion battery

M31150-S 12.8V 150 Ah Lithium Ion Engine Starting Battery Specifications:

  • 12.8V
  • 150 Ah (1920 Wh)
  • BCI Group 31 Size (13 in. L x 6.81 in. W x 8.43 in. D)
  • 360 minute reserve
  • 36.0 pounds

About Lithium Professionals

Lithium Pros was founded in 2011 and is focused on building lithium-ion batteries for the specific purpose of replacing lead-acid batteries for use in demanding applications. They strive to uphold the ideals spelled out in their mission statement: “Through constant innovation, create high-power lithium-ion battery packs that are safe, easy to install, and start an engine like nothing else.”

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