Engine Starting Power
  • Powerbox+ 135 Waterproof Solar Generator, 12V 135Ah DL+ 1,000CCA Battery Included
A waterproof & submersible battery designed for versatility, from starting cars to working remotely

Powerbox+ 135 Waterproof Solar Generator, 12V 135Ah DL+ 1,000CCA Battery Included

(3 reviews)
  • Free Shipping to Lower 48
  • 11 Year Warranty
  • FREE 12V 10 Amp Lithium Charger Included
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Powerbox+ 135 Waterproof Solar Generator, 12V 135Ah DL+ 1,000CCA Battery Included

(3 customer reviews)



A waterproof and submersible mobile power station & solar generator for use in extreme environments. Jump start a car or boat engine with over 1,000 cold cranking amps (CCA) of engine starting power, run a trolling motor, or power your devices and smaller appliances with 135 amp hours (1,728 watts) of deep cycle Dakota Lithium energy. All in one waterproof lithium battery so light that it floats.

98 in stock

Need tons of power? Bulk pricing discount
Need tons of power? Bulk pricing discount
For larger quantities contact sales@dakotalithium.com
Five Times the Power
of Traditional Batteries
Half the Weight
Charges 5X Faster
Lasts 5X as long
Greatest Lifetime Value


Waterproof Rating

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

Buoyancy (how well it floats)

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

Powerbox+ 135 Case

Waterproof  and submersible (IP67) ruggedized Powerbox+ 135 military spec plastic case with shock proof battery cradle. Fully field maintainable -- easy to disassemble and repair in the field if needed.

Terminals & Binder Posts

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

Voltmeter & External USB plugs

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

DC to AC Inverter Included

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

Internal Storage & Anti-Static Electronics Tray

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

Battery Included

Dakota Lithium Plus 12V 135Ah Dual Purpose 1,000 CCA Battery. Complementary Jumper Cables Included

Charger 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.

11 Year Battery Warranty

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

Storage Capacity

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)

Engine Starting Power

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


11.6”L x12.1”W x 12.8”H (295mm x 307mm x 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.

Lifecycles (battery lifespan)

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.

Operating temperature

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.

Ultra-Fast Charging

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..

Includes active BMS protection

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.

Internal Heating for Winter Use

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.

Cold temperature charging protection

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.

Dual Purpose Use

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

Suitable for:

  • Starting Car and Light Truck Engines
  • Deep Cycle Applications
  • Trolling Motors #FishLonger
  • #Overland & Truck Builds
  • #VanLife & RV Battery Upgrade
  • Car Audio
  • Working Remotely
  • Emergency Power & Disaster Response
  • Construction Sites
  • Medical devices & CPAP machines
  • Fish Finders, Flashers, & Boating Electronics
  • Mobile Power Station & Solar Generator
  • Combine with Solar Panels For Unlimited Off-Grid Power
  • Expedition Power - Fully Field Maintainable

One Battery to Power Many Things

What Can My Battery Power?*



Experience the Dakota Lithium Difference

Inside the Powerbox+ 135 is the legendary Dakota Lithium Plus 12V 135 Ah dual purpose battery, built with our signature LiFePO4 cells. 2,000+ recharge cycles (roughly 5 year lifespan at daily use) vs. 500 for other lithium batteries or lead acid. Optimal performance down to minus 20 degrees Fahrenheit (for winter warriors). Plus twice the power of lead-acid batteries at half the weight.

3 reviews for Powerbox+ 135 Waterproof Solar Generator, 12V 135Ah DL+ 1,000CCA Battery Included

Extremely well made and durable. Very pleased with product performance as well in cold climates. Holds charge extremely well and easy to use in the field. My thanks to the Dakota team that helped with my purchase and ongoing support for the few questions I had.

Chad Smith

I used the powerbox to run my lights nightfishing for spec. It would be nice if you could plug into 110 without having to open the box so that everything would remain waterproof. Just a suggestion tho. 💯

Jesse McCoy

A couple of years ago I bought a Dakota 7AH battery, and used it in an old Craftsman 12v emergency jumper/power supply. It fit perfectly in place of the original lead acid battery that had long since died. I removed the 120v charge port & put power pole connectors in its place, giving me that option in addition to the cigar lighter port and the larger battery cable clamps. This was a versatile usable unit once again and can be recharged either through the power pole connectors or the battery clamps when they are turned on.

My next purchase was a Dakota 10AH battery that I found useful when I became an amateur radio operator and wanted a battery for portable use and back up for power outages. I soon added a 2’nd 10AH battery, and have them connected in series and available to power my rig with the flip of a switch. Depending on my mode of operation, I can run a couple of days before the voltage drops below 12V.

I had my eye on the big power box for a long time, and finally ordered one that I can use also with my portable solar panels. It’s an excellent combination that I’ve tested, but haven’t used in a blackout situation yet. I decided to buy an additional battery that matches the one in the Power Box, and I now have the option of using the 300W inverter in the Power Box for small loads, and adding the additional battery in series, and feeding a 1500W Pure sine wave inverter for larger loads under a longer duration power failure. I will be adding a couple more solar panels in the future, and the dual purpose batteries mean that I can charge from my alternator if needed.

There are cheaper batteries available, but the customer support and warranty from Dakota Lithium offer peace of mind mean a lot as well.


Bulk pricing available at checkout. For larger quantities visit our B2B page or call 1-855-743-3279.

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