Dakota Lithium 12v 18ah Battery | Dakota Lithium Batteries
11 Year Warranty
  • Dakota Lithium 12v 18Ah Battery
The perfect SLA 12Ah replacement battery

Dakota Lithium 12v 18Ah Battery

(115 reviews)
  • Free Shipping to Lower 48 & Canada
  • 11 Year Warranty
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Dakota Lithium 12v 18Ah Battery

(115 customer reviews)



Engineered in a 12Ah SLA plastic case, but with with 18Ah of Lithium Iron Phosphate (LiFePo4) technology, this battery has three times the power, half the weight, and 5x the lifespan of a 12Ah sealed lead acid battery.

Available on backorder

SKU: PID12V18AH Category: Tag:
Need tons of power? Bulk pricing discount
Need tons of power? Bulk pricing discount
For larger quantities contact sales@dakotalithium.com
Double the Power
of Traditional Batteries
Half the Weight
Charges 5X Faster
Lasts 4X as long
Greatest Lifetime Value


11 Year Warranty

World beating, best in class, eleven year manufacturer defect warranty.


18 Ampere hours. Dakota Lithium batteries provide consistent power for all 18 Amp hours. DL 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, especially in cold temperatures. You get all the juice down to the last drop.




216 Watt-hours (Wh)


F2 Terminals (spade socket). When used in salt water, or corrosive, environments we recommend applying a small amount of dielectric grease on the blades of each terminal. It helps extend the lifespan.


5.94"x 3.95"x 3.78" (151x99x96mm). Replaces 12Ah 12V SLA Batteries.


4.55 lbs (2.0Kg). That's 60% lighter than a SLA battery.

Lifecycles (battery lifespan)

Up to 80% capacity for 3,000 cycles in recommended conditions. The typical SLA has 500 cycles. Dakota Lithium batteries last so long that the price per use is a fraction of traditional batteries.

Operating temperature

Ideal for rugged & harsh environments. Much better than SLA or other lithium’s. -20°F min, +120°F max optimal operating temps (battery performs well down to -20°F). Avoid charging below 32°F.


18A max continuous, 50A max pulse (<3 sec). The flat discharge voltage curve provides a 75% bigger capacity than a SLA 18Ah battery. Please note: For small trolling motors <20 lbs of thrust, we recommend using two of these batteries in parallel to create a 36 Amp continuous discharge rate and 36Ah of capacity. This increases runtime and lifespan of the battery.


9A 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

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.

Series or Parallel

BMS can support wiring these batteries in series or parallel for up to 4 units (up to 48V series or to 12V 72Ah parallel)


All batteries are UN38 certified. Dakota Lithium's cells are UL1642 certified and have been tested per IEC62133 standards. Meets all US & International regulations for air, ground, and train transport.

ISO 9001:2015

Dakota Lithium is ISO Certified per 9001:2015 standards, and select models are produced in ISO 14001 certified facilities.

Charger Sold Separately

This battery should be charged using a LiFePO4 compatible charger. Dakota Lithium 12V batteries should be charged at 14.4 volts, higher than AGM or lead acid. Lead acid chargers will work, but will only charge the battery to 80% of capacity.

Suitable for:

  • Fish Finders, Flashers, & Boating Electronics
  • Garmin Fish Finders
  • Ice Fishing
  • LiFePO4 Replacement for SLA 12v
  • Mobility Scooters (triple your battery range)
  • 24V Electric Bikes & Scooters
  • Industrial Batteries
  • Robotics
  • Hunting, Camping, and Trail Cameras
  • Remote Power
  • Outdoor Adventures

Experience the Dakota Lithium Difference

Engineered in a 12Ah SLA case, but with with 18Ah of Lithium Iron Phosphate (LiFePo4) technology this, battery has three times the power, half the weight, and lasts 4 times longer than a 12Ah sealed lead acid battery. Optimal performance down to minus 20 degrees Fahrenheit (for winter warriors). Plus a best in class 11 year warranty.

115 reviews for Dakota Lithium 12v 18Ah Battery

Battery life is great no complaints would highly recommend buying great purchases

Ray Bontrager

Got it for my livescope ice fishing bundle and used it three days before battery finally shut off. Lasts approximately 3 times longer then the lead acid battery that came with it. Very happy with it.

Kyle R. Hulbert

I purchased this for my Garmin Panoptix ice fishing unit. I wanted to lighten it up and extend the run time, so the Dakota Lithium 18Ah battery was the perfect fit. Both literally and figuratively. It was the same size as the SLA battery that came with the unit, making it much more comfortable to lug around while searching for fish. I also use their smaller 10Ah batteries in my daughter’s and my own Vexilar flashers, and have been impressed with the extended run time we get with them, as well as the reduced weight. Knowing that they are all covered by Dakota’s amazing 11 year warranty, gives me peace of mind. And, especially these days, I greatly appreciate that. I would not hesitate to make another purchase from Dakota Lithium, in the future, should the need arise.


Very lightweight and it seems to power my Garmin fish finder with plenty of run time. I run the Echomap 93 sv and usually run at least traditional sonar with down imaging, and often run both of those also with side imaging. The battery performs as I expect it to and charges quickly using the Dakota lithium charger. Very happy with it.

James K.

Haven’t used them for long but they seem promising to start.

Scott W.

Let’s me fish all day



Greg Betteridge

This is a big step up from my 10 aH battery and I’m very pleased.

Sanjay Gokani

Amazing Battery. Very small and light and works great. Quick charge.


For more information or larger quantity inquiries, visit our B2B page or please call our sales team at 1-855-743-3279.

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