IP67 Waterproof rating means this battery is submersible at a depth of 3 ft of water for 30 hour with no internal moisture.

12% of mass above waterline. PB135 is a waterproof battery so light that it floats

Waterproof  and submersible (IP67) ruggedized Powerbox+ 135 military spec plastic case with shock proof battery cradle

Waterproof automotive binder posts for connecting trolling motors, jumper cables, or other high power applications while maintaining waterproof seal

Waterproof voltmeter for monitoring the battery power level & external USB C & USB A for connecting devices while maintaining waterproof seal

300 watt continuous, 600 watt peak DC to AC Inverter w 2 AC wall plugs + 4 USB plugs and smart power use display

Internal ballistic nylon bag with 3 zippered pockets for waterproof storage of personal electronics when box is sealed plus a removable, washable, anti-static silicone electronics tray for keeping personal electronics clean and safe while charging included

Dakota Lithium Plus 12V 135Ah Dual Purpose 1,000 CCA Battery included

12V 10A LiFePO4 charger included. 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.

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

135 Ampere hours (Ah). Dakota Lithium batteries provide consistent power for all 135 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. You get all the juice down to the last drop.

12.8 Volts (V)

Lithium battery equivalent to 1,000 Cold Cranking Amps (CCA) of lead acid battery engine starting power. Suitable for automotive applications.

11.6”x12.1”x 12.8” (295 x307x 325mm)

1,620 Watt-hours (Wh)

37.7 lbs (17.1 Kg). So light that it floats. 1/4-1/2 the weight of a normal car battery.

Up to 80% capacity for 2,000 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.

Ideal for rugged & harsh environments. Much better than SLA or other lithium batteries. -20°F min, +150°F max optimal operating temps (battery performs well down to -20°F). Internal even-heat technology allows for charging below 32°F. BMS high temp cut off at 167°F / 75°C.

100A max continuous discharge, 750A max 2 second pulse, 650A max 5 sec pulse. The flat discharge voltage curve provides a 75% bigger capacity than a 60Ah SLA battery.

DL rapid charge technology allows for charging speeds of 60 minutes (135 Amps). Recommend for longest life 60A or less (1C), Max continuous 80A (1.5C). 14.4V recommended, 15V max, BMS protection from over charging will cut off at 15V. Included is a free 12V 10 Amp (A) LiFePO4 compatible charger that charges at the recommended 14.4 Volts..

Contains a high discharge capable circuit that handles cell balancing, low voltage cutoff (10V) preventing over discharge, high voltage cutoff (15V) preventing over charging, short circuit protection and temperature protection for increased performance and longer life.

Increases performance in extreme cold. When charging the battery in temperatures below 0°C/32°F DL's internal heating element will warm the cells to 0°C/32°F. This increases the lifespan, performance, and efficiency of the battery.

Contains a smart BMS temperature cutoff that prevents charging when cells are below 0°C/32°F and protects the battery.

All DL 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, train, & marine transport.

Multi-purpose use as a deep cycle battery and/or as a starter battery for starting gasoline engines.

Product Manual

N/A

Product Warranty & Return Policy

Dakota Lithium Product Warranty & Return Policy

Eleven Year Warranty

We stand behind the quality of our products:

1) 30 day money back guarantee on all orders. If you are unsatisfied for any reason with one of our batteries you can return it for a refund up to 30 days after purchase.

2) 11 year manufacturer defect warranty on all batteries. If we made a mistake building your battery we will repair or replace it. See warranty & return policy for details.

3) Lifetime technical support. Reach out to support@dakotalithium.com for help from our team of experts.

4) 1 year warranty on chargers, powerbox case, and accessories.

30 Day Money Back Guarantee

If you are unsatisfied for any reason with one of our batteries you can return it for a refund, less a 5% restocking fee, up to 30 days after shipping date. 

Product FAQs

Twice the Power?

Yes! Here at Dakota Lithium we build all of our batteries with lithium iron phosphate technology which has many distinct advantages over traditional batteries. Including 60% less weight, a charging speed that is up to 5X faster, and a significantly longer lifespan (5-10 years longer on average). One of the most noticeable advantages however is the flat voltage curve. Unlike a lead acid battery where the voltage drops as you use the battery a Dakota Lithium battery has a steady voltage for 99% of the battery's charge. That means you get all the power down to the last drop and double the usable power of traditional batteries.

Are Lithium Batteries Safe?

Dakota Lithium batteries are 100% safe & reliable. Our signature chemistry, Lithium Iron Phosphate (LiFePO4), does not contain rare earth elements (like Cobalt) or heavy metals, is non-toxic, including no lead or acid, is non-corrosive, does not off gas, requires no watering or maintenance, can be placed in any orientation, and unlike other lithium batteries will not explode or catch fire. In addition, each Dakota Lithium battery is protected from over heating, over charging, and short circuiting, by a battery management system (BMS) microchip that also extends the lifespan and is contained in a rugged, waterproof case (although enough water can conduct electricity between the terminals, so don't submerse the battery). For best performance & reliability we recommend using a LiFePO4 charger.

How do I charge a lithium battery?

Dakota Lithium batteries perform best when charged by a lithium compatible charger. Lead acid or SLA chargers, on-board chargers for AGM batteries, or other non-lithium chargers will charge a Dakota Lithium battery but only to 70-80% of capacity. This is because Dakota Lithium iron phosphate (LiFePO4) technology charges and is full at a higher voltage then traditional batteries (Dakota Lithium charges at 14.4 Volts). Chargers with a lithium battery setting or designed for lithium will charge at the appropriate voltage. See our full catalog of LiFePO4 battery chargers here. All batteries 54Ah and larger include a free LiFePO4 compatible charger. For troubleshooting tips download the Dakota Lithium battery user manual here.

Will cold weather affect my battery?

Your Dakota Lithium battery will discharge normally between a range of -20F and 120F (-29C to 49C). DL batteries are commonly used among ice fishers for their flashers and ice augers, so they are quite resilient and are frequently used in cold climates. In cases of extreme cold however, it is recommended that the batteries be insulated. We also do not recommend charging our batteries below freezing temperatures. If you are planning to regularly charge your battery below freezing temperatures we recommend the DL+ 12V 135Ah battery which has an internal heating element and is optimal for use in cars, trucks, RVs, off grid solar, and any application where the battery will be charged regularly in extremely cold environments (like a North Dakota winter).

Do You Have a Military Discount?

Yes! Dakota Lithium supports the men and women who are serving, or have served in the US or Canadian armed forces. You can use the code DakotaMilitary at check out for 10% off. Please share the branch of the military or unit where you served in the order notes. A number of veterans and pilots (one of our founders flew F-16s) work for Dakota Lithium and we'd love to hear your story. (P.S. the discount code is on the honor system, so please only use it if you are a veteran). If you are part of a veteran's organization that would like to partner with Dakota Lithium you can set up a group buy at wholesale prices by contacting sales@dakotalithium.com or for donations please fill out the philanthropy application form here.

Can I use this to start my car/boat engine?

Our DL+ line of batteries have 1000cca of engine starting power plus the same legendary deep cycle capabilities of all Dakota Lithium batteries. That means you can use them for starting a boat, car or truck engine. Our standard deep cycle batteries do not have this cold cranking ability and can not be used for a starting battery.

What Trolling Motor Battery Do You Recommend?\

Dakota Lithium is a proud sponsor of over 200+ professional athletes in the fishing industry. Here's batteries sizes recommended by our pros depending on the size of your trolling motor: Motor Thrust / Max Amp Draw (A) @ Voltage (V) / Recommended Battery

• 20 lbs / 20A @ 12V / DL 54 or DL+ 60
• 25 lbs / 25A @ 12V / DL 54 or DL+ 60
• 30 lb / 30A @ 12V / DL 54 or DL+ 60 or DL 100
• 45 lb / 42A @ 12V / DL 54 or DL+ 60 or DL 100
• 55 lb / 50A @ 12V / DL 54 or DL+ 60 or DL 100
• 70 lb / 42A @ 24V / 24V Single or DL 54 x 2 or DL+ 60 x 2 or  DL 100 x 2
• 80 lb / 56A @ 24V / DL+ 60 x 2 or DL 100 x 2 or DL 200 x 2
• 101 lb / 46A @ 36V / 36V Single or DL+ 60 x 3  DL 100 x 3 or DL 200 x 3
• 112 lb / 52A @ 36V / 36V Single or DL+ 60 x 3 or DL 100 x 3 or DL 200 x 3
• >112 lb / Up to 100A @ 36V / DL+ 60 x 3 or DL 100 x 3 or DL 200 x 3

For wiring multiple batteries in series we recommend Connect Ease trolling motor connection kits available on our trolling motor battery page. For a deep dive on trolling motor batteries read How to Choose A Lithium Battery for Trolling Motors\

What battery do I need for my RV or Camper Van?

The industry standard house battery size used in most RVs, Campers, and #VanLife builds is the DL 100Ah battery. This is a drop in replacement for AGM and most lead acid batteries. If you are charging off your engine's alternator we recommend a Victron DC-DC smart charger. If charging off solar panels we recommend a Victron Smart Solar charge controller, or if you have a solar charge controller choose the lithium setting. A handy size chart for number of batteries needed by size of RV is available here.