Dakota Lithium DL+ 12V 640Ah Dual-Purpose LiFePO₄ Battery
The DL+ 12V 640Ah is Dakota Lithium’s most powerful dual-purpose battery, engineered to replace multiple lead-acid batteries with a single, smart, self-heating LiFePO₄ unit. Capable of delivering both deep-cycle storage and engine-starting current, it’s built for extreme off-grid, marine, and commercial vehicle applications. With over 8 kWh of energy, CAN-bus/NMEA integration, and a cold-weather-ready design, it delivers long-lasting power in even the harshest environments.
Dakota Lithium DL+ 12V 640Ah Dual-Purpose LiFePO₄ Battery Features
Massive 640Ah Capacity
Holds over 8,000Wh of usable energy—perfect for running large off-grid systems, RV appliances, marine electronics, and more.
Dual-Purpose Functionality
Delivers high-discharge power for engine starts (1,000 CCA) and sustained output for running inverters, tools, and electronics.
Built-In Heating Technology
Self-heating system enables safe charging in freezing temperatures—automatically activates when needed for cold-weather reliability.
LiFePO₄ Cell Chemistry
Offers superior safety, power density, and over 5,000 cycles at 80% depth of discharge for long-term performance.
CAN-bus & NMEA Integration
Communicates directly with smart power systems, marine electronics, or industrial dashboards for real-time data and remote management.
Rugged Waterproof Housing
Sealed marine-grade case protects internal components from water, salt, shock, and vibration—safe for wet installs and rough rides.
Advanced Battery Management System (BMS)
Monitors and protects against over-voltage, under-voltage, over-current, short circuit, overheating, and cell imbalance.
Dakota Lithium DL+ 12V 640Ah Dual-Purpose LiFePO₄ Battery Applications
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Off-Grid Homes & Cabins: Perfect for whole-home power with inverter integration.
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RVs & Campers: Easily supports air conditioning, fridges, cooking appliances, and lighting.
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Boats & Marine Vessels: Dual-purpose function supports both trolling and starting.
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Work Trucks & Food Trucks: Run high-draw appliances while retaining cranking power.
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Emergency Backup Systems: Provides uninterrupted power and automatic cold-start readiness.
What’s Included?
Warranty
Dakota Lithium DL+ 12V 640Ah Dual-Purpose LiFePO₄ Battery Specifications
| Category |
Details |
| Warranty |
Best-in-Class 11-Year Manufacturer Defect Warranty |
| Storage Capacity |
640Ah – steady power output across entire capacity |
| Energy |
7680Wh |
| Voltage |
12.8V (supports series connection up to 48V systems) |
| Cold Cranking Amps (CCA) |
1000 CCA – suitable for most marine and large vehicle engines |
| Lifespan / Cycle Life |
5000 cycles at 80% capacity; 6000–7000 cycles to 50% (typical SLA ≈ 500 cycles) |
| Discharge Rates |
300A continuous, 600A (20 sec), 900A (5 sec CCA pulse) |
| Charge Parameters |
100A standard, 300A max for 60 sec; 14.4V recommended, 14.6V max |
| Even-Heat Technology |
Enables safe charging below 32°F / 0°C by warming cells internally |
| Recommended Charger |
12V 50A LiFePO₄-compatible charger (SLA chargers only charge to ~80%) |
| Operating Temperature |
-20°F to 150°F (-29°C to 65°C); BMS high temp cutoff at 167°F (75°C) |
| Size (L × W × H) |
27.00 × 8.07 × 10.43 in (686 × 205 × 265 mm) – height includes terminals |
| Weight |
121 lbs (55 kg) |
| Terminals |
M10 terminals with marine/automotive-grade terminal covers |
| Marine Grade / Waterproof |
IP65 water resistance (not submersible) |
| Safety Features |
BMS with cell balancing, low/high voltage cutoffs, short circuit and temperature protection |
| Certifications |
UL1642 (cells), IEC62133, UN38.3 compliant; safe for air, ground, and marine transport |
| ISO Certification |
ISO 9001:2015 – engineering, manufacturing & QC; select models produced in ISO 14001 facilities |
| CAN Bus Support |
9-pin CAN communication port for integration with marine, off-grid, and automotive systems |
| Remote Terminal Control |
External data port enables remote on/off control of charging and discharging functions |
Frequently-Asked Questions
Can this battery be used as a generator replacement?
Yes. It can easily support a full inverter-based power system for homes, boats, or mobile setups without a generator.
Is the built-in heater automatic?
Yes. The heater turns on below 32°F and allows the battery to safely accept a charge in freezing temperatures.
Can I use this battery for both house loads and engine starting?
Absolutely. It’s designed as a true dual-purpose battery with both deep-cycle and cranking capabilities.
Does it work with solar charge controllers and inverters?
Yes. It’s compatible with most modern MPPT charge controllers and pure sine wave inverters, especially those supporting LiFePO₄ battery profiles.
