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Monster Marine Lithium 12V 120Ah Dual Purpose Battery w/ BlueTooth

Original price $999 - Original price $999
Original price $999
$999 - $999
Current price $999

Often Purchased Together

This Group 31 cranking lithium packs a big punch into cranking over your boat engine. This battery is designed with the appropriate BMS to handle the voltage spikes and the high output of these new 4 stroke engines. Coming in with 1300CCA (cold cranking amps) and 120Ah of storage to run all your electronics needs ,this battery is perfect for your boat & only weighing in at 26 lbs! A second can be added in parallel if anyone ever wants to add another 120Ah of energy storage to their boat! Suitable for all boat engines! Coming with bluetooth capability so you can check battery status via an app.

This cranking lithium meets and exceeds Mercury Engines new spec bulletin in every aspect! The question we get asked often is will it work with my engine? Of course! We have tested personally with family and friends boats for a couple of years now as well as all of our major Pros running all career season on many engines to include: Mercury pro xs 4 stroke, Yamaha 4 stroke & sho 4 stroke both older and newer as well as Yamaha hpdi, Mercury Verado 4 strokes, Suzuki 4 stroke, evinrude 2 stroke, Mercury pro xs 2 stroke, mercruiser 4 stroke! These have all been tested on these engines for over a year!


5 Year Warranty



120 ampere hours (Ah). Lithium batteries provide consistent power for all 120 amp hours. LiFePO4 batteries have a flat voltage curve, which means they have a steady power output as the battery discharges. The power output will not dramatically drop like similar sized SLA batteries. You get all the juice down to the last drop.


1280 Watt-hours (Wh)

Lithium battery equivalent to 1,300 Cold Cranking Amps (CCA) of lead acid battery engine starting power. Suitable for automotive and other applications. Marine Outboards: Please refer to your manufacturer recommendations.

Drop in replacement for lead acid and AGM starter batteries for vehicles. .


13.0” L x 6.8” W x 8.8” H.

Group 31 equivalent, LBS aluminum battery trays available on our website.


25 lbs 

F12 terminals


120A max continuous discharge


Charge Volts 14.6V. LiFePO4 compatible charger not included. A SLA charger may work, but will reduce performance and lifespan of the battery.


Contains a circuit that handles cell balancing, low voltage cutoff, high voltage cutoff, short circuit protection and high temperature protection for increased performance and longer life.


LiFePO4 charger not included. Compatible chargers sold on our website. 

 Suitable For

  • All 12v electronics (preferred because of steady voltage)
  • Starting boat engines: 2 strokes and 4 strokes
  • Trolling motors 12v, 24v, and 36v
  • Connect up to 4 in series for 24v, 36v, and 48v 100Ah capacity
  • Connect in parallel for higher capacities
  • LiFePO4 replacement for SLA 12v
  • 36v and 48v gold carts

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