Dakota Lithium DL+ 12V320Ah Heated Dual Purpose Deep Cycle & Engine Starting

The Dakota Lithium DL+ 12V 320Ah Heated Dual Purpose LiFePO4 Battery packs 3,840Wh of storage plus 1,000 CCA engine starting into a single Group 31 unit. With IP65 water resistance, Even-Heat cold-weather charging, and 200A continuous discharge, it replaces an entire lead-acid battery bank with one 65 lb battery that lasts 5,000+ cycles.

Note: Dakota Lithium upgraded this battery from 280Ah to 320Ah. You’re getting 14% more capacity than originally advertised at the same price point.

Key Features

• ✓ 320Ah / 3,840Wh capacity — enough to power an RV for 4-5 nights off-grid or run a 2,000W inverter for nearly 2 hours at full load.
• ✓ Dual purpose: 1,000 CCA + deep cycle — start your engine AND run house loads from one battery. No separate starter battery needed.
• ✓ Even-Heat Technology — internal heating activates below freezing, warming cells before charging. Essential for Canadian winters and mountain camping.
• ✓ IP65 marine-grade protection — dust-tight and spray-resistant. Install in engine bays, under seats, or exposed marine compartments.
• ✓ 200A continuous / 300A burst discharge — powers large inverters, winches, and high-draw systems without voltage drop.
• ✓ 65 lbs total — replaces 200+ lbs of dual 6V AGM batteries in a single compact unit.
• ✓ Group 31 / Marine 8D compatible — fits standard heavy-duty battery trays without modification.
• ✓ 5,000+ cycle lifespan with 11-year warranty — the longest warranty in the LiFePO4 market.

Technical Specifications

Applications

• RV/Motorhome house battery — single battery replaces entire dual-6V AGM bank. Powers AC, fridge, lights for 4-5 nights.
• Off-grid cabin/home backup — 3.84 kWh in one unit. Pairs with 400-800W solar array.
• Large marine systems — engine start + house power in one unit. IP65 rated for below-deck install.
• Van life / skoolie builds — 3.84 kWh handles full electrical systems (induction cooktop, AC, work-from-van setups).
• Commercial vehicles — liftgate power, auxiliary systems, idle-off applications.
• Solar storage — 400W panel fully recharges in 6 sun-hours. Bank 2-4 for whole-home backup.

System Sizing

Compatible Accessories

• Dakota Lithium 12V 20A Waterproof Charger — full charge in ~16 hours, IP67 onboard
• Victron Orion-Tr Smart 12/12-30A — alternator charging at 360W while driving
• Victron MultiPlus 12/2000/80 — inverter/charger combo, 2000W pure sine
• Victron BMV-712 Smart — precision SOC monitoring for large banks
• Victron SmartSolar MPPT 100/50 — solar controller for 400-700W arrays
• Battery Isolator Switch 275A — required disconnect for dual-purpose installs

FAQ

Why does the title say 280Ah but the specs say 320Ah?

Dakota Lithium upgraded this battery’s capacity from 280Ah to 320Ah in their latest production run. The URL and some references still show the old capacity, but the actual product shipping is 320Ah / 3,840Wh. You’re getting 14% more capacity at the same price.

Can this really start an engine AND be a deep cycle battery?

Yes. The DL+ line’s 1,000 CCA rating handles engine cranking while the 320Ah deep cycle capacity powers house loads. The BMS manages both functions. This eliminates the need for separate starter and house battery banks—one battery does both jobs.

How does it handle Canadian winters?

Even-Heat technology is specifically designed for this. When charging below 0°C (32°F), the internal heater warms cells to safe charging temperature before accepting current. Discharging works down to -4°F (-20°C). This is one of the few lithium batteries rated for year-round Canadian use without external heating pads.

What charger do I need for 320Ah?

Any 14.4V LiFePO4 charger works. For reasonable charge times, use 50A+ capacity: the Dakota Lithium 50A charger fills it in ~6.5 hours. The 20A charger works but takes ~16 hours. For solar, pair with 400W+ panels and a MPPT controller rated for your system voltage.

Is it waterproof enough for a boat?

IP65 means it’s dust-tight and protected against water jets from any direction—but it’s not submersible. It’s designed for below-deck, engine bay, or exposed cockpit installation. Don’t submerge it, but rain, spray, and washdown are fine.

Warranty & Certifications

11-year manufacturer warranty—the longest in the LiFePO4 industry. Covers manufacturing defects under normal use. Certified UL1642, IEC62133, UN 38.3. Manufactured in ISO 9001:2015 facilities. Ships as Class 9 Dangerous Goods with proper lithium battery documentation.