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

Overview

POWERBOX+ 135 – WATERPROOF & SUBMERSIBLE MOBILE POWER STATION

A rugged, waterproof, and submersible lithium power station & solar generator built for extreme environments. The Powerbox+ 135 is designed to jump-start vehicles, run trolling motors, and power off-grid electronics with ease. Featuring 135 amp hours (1,728Wh) of deep cycle energy, this fully field-maintainable battery is built to power everything from essential devices to heavy-duty applications—all in a lightweight, floatable design.

Key Features:

• Jump-Start Any Vehicle – 1,000 cold cranking amps (CCA) for cars, boats, and heavy machinery.
• Deep Cycle Power – 135Ah capacity for long-lasting energy storage.
• Multi-Device Charging – 2 AC wall plugs, 3 USB-A ports, and 3 USB-C ports (PD60W).
• Waterproof & Submersible (IP67) – Shockproof military-grade plastic case with a battery cradle for field maintenance.
• Smart Power Monitoring – Bluetooth-enabled Power Gauge battery monitor with phone app.
• High Power Output – 2,000W continuous / 4,000W peak DC to AC inverter with a smart power display.
• Versatile Applications – Run 12V trolling motors, electric coolers, fish finders, power tools, medical devices, and more.
• Lightweight & Floatable – Lithium technology makes it portable and buoyant.

What’s Included:

• Dakota Lithium Plus 12V 135Ah Dual-Purpose Battery with internal Even Heat Technology for charging in extreme cold.
• 2,000W continuous / 4,000W peak inverter with 2 AC wall plugs + 2 USB-C PD60W ports.
• Waterproof automotive-grade binder posts for high-amp applications.
• Waterproof voltmeter for real-time battery monitoring.
• Internal ballistic nylon bag with 3 zippered pockets for waterproof storage.
• Removable, washable, anti-static silicone electronics tray for safe storage while charging.
• 12V 10Ah LiFePO4 battery included.
• 12V 10A Charger included.

Built to Last:

Powered by Lithium Iron Phosphate (LiFePO4) technology, the Powerbox+ 135 delivers twice the power, half the weight, and 4X the lifespan of lead-acid batteries. Built for marine use, off-grid adventures, and heavy-duty applications, it ensures reliable power for years to come—backed by an industry-leading 11-year warranty.

Specifications

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
2000 watt continuous, 4000 watt peak DC to AC Inverter w 2 AC wall plugs + 2 USB-C PD60W 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

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.

Voltage
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.

Size
11.6”L x12.1”W x 12.8”H (295mm x 307mm x 325mm)

Energy
1,620 Watt-hours (Wh)

Weight
42.92lbs (19.47kg) so light that it floats. 1/4-1/2 the weight of a normal car 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 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.

Discharge
35A max continuous discharge, 1000A max 2 second pulse, 900A max 5 sec pulse. 9.0V Max discharge, 11.0V Max recommended discharge.The flat discharge voltage curve provides a 75% bigger capacity than a 135Ah SLA battery with the same CCA rating.

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. Recommended Charger 12V 10 A LiFePO

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.

Certifications
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.