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