11 Year Warranty
  • Dakota Lithium 12v 20Ah Battery
The perfect SLA 12Ah replacement battery

Dakota Lithium 12v 20Ah Battery

(131 reviews)
  • Free Shipping to Lower 48 & Canada
  • 11 Year Warranty
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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 8X as long
Greatest Lifetime Value


11 Year Warranty

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


20 Ampere hours. Dakota Lithium batteries provide consistent power for all 20 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.




256 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.

USB / Voltmeter

USB B & C ports provide easy charging for personal electronics. Voltmeter included for monitoring battery power levels.


6.3" x 3.94" x 3.86" (160mm x 100mm x 99mm)


4.25 lbs (1.93Kg) That's 65% lighter then a SLA battery.

Lifecycles (battery lifespan)

Up to 80% capacity for 5,000 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.


10A continuous, 20A max. Note: For small trolling motors, we recommend using our 12v 54Ah battery to maximize your time on the water


10A 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 80Ah 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. 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
  • 6-dzm-12 battery equivalent
  • 12V 12Ah SLA Equivalent Size

Experience the Dakota Lithium Difference

Engineered in a 12Ah SLA case, but with with 20Ah of Lithium Iron Phosphate (LiFePo4) technology this, battery has three times the power, half the weight, and lasts 8 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.

131 reviews for Dakota Lithium 12v 20Ah Battery
George A.

My wife and I fished for 6 hours and this battery was still @ fully charged awesome and the weight of this battery is amazing so light i will be a lifetime user thanks DL

Robert Duff

This small but powerful battery keeps my Humminbird 1197 combo going for 2 days before it needs charged. Bonus has a USB and phone plug for additional use of devices. Real time digital charge indicator.


Excellent value. Use it when I’m on shore planning my next day. Have a Garmin 8612. Light weight is great for a Senior!

Michael P.

Seems to be working very well so far.

James S.

This battery ran my Garmin Echomap 93SV for a 12 hour day on the water and only dropped to 13.3 V. That is amazing.


Light weight and has the amp hours to keep my Garmin running all day.


Haven’t had a chance to test the 20 ah yet…..installed in back of starboard rod box. Using it to power 1 garmin 73 sv uhd and 1 93 sv uhd. Should give me plenty of run time. Pleasantly surprised to receive the 20 ah with volt meter and 2 usb ports for price of 18 ah Dakota…..Also have a 60 ah dual purpose Dakota for cranking battery……luv it!!


Randy Bulau

Great battery

Todd R.

I purchased the battery to power my panoptics box for live view and the clarity improved dramatically 😁


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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