Enerdrive DC2DC 40A Charger 12V Dual Input MPPT Auto-Switch for Engine and Solar Off-Grid

The Enerdrive DC2DC+ 40A Battery Charger for 12V systems is a purpose-built, fully automatic multi-input charger designed to power your house battery bank from two reliable sources: your vehicle’s engine (alternator) and dependable solar panels. Built for demanding off-grid setups—whether you’re in a campervan, RV, boat, or remote worksite—this unit blends smarter charging with rock-solid reliability.

Two truly independent inputs, automatic, no relays needed

With two completely separate DC inputs, you can charge your main house battery from the engine while underway and simultaneously top up from solar when parked. The system automatically selects and manages the best source, seamlessly switching between engine and solar without external relays or complex wiring. The result is a safer, simpler, more efficient charging experience.

Maximum Power Point Tracking (MPPT) solar regulator

The built-in MPPT solar controller extracts maximum power from your panels, even in variable conditions. Accepts up to 45V and 800W of solar input, delivering optimal charging when the sun is shining and keeping the battery bank topped up during long trips or weekend getaways.

Flexible battery support for real-world packs

Charge any common deep-cycle chemistry with confidence—GEL, AGM, Flooded, or Lithium. You can even design a custom charging profile to suit your exact battery brand and model. The Enerdrive charger delivers the right algorithms to protect and extend battery life, so you get more cycles and longer performance from your investment.

Robust, high-current output with smart cooling

Delivering up to 40A (40A+ under appropriate conditions), this charger can rapidly restore a depleted bank. When ambient temperatures rise, a thermally controlled fan keeps the unit cool, preserving charging efficiency and protecting components in hot climates.

Programmable LCD, real-time visibility, and precise control

The fully programmable LCD display shows exactly which source is charging, the charger status, battery voltage, and current. You’ll instantly see performance at a glance and can tailor parameters to your setup for optimal charging behavior.

Smart, integrated temperature sensing

A dedicated temperature sensor provides more accurate battery charging by adjusting voltage targets to the battery’s actual conditions. This feature helps prevent overcharge or undercharge in varying environmental temperatures.

Key technical highlights

• Two totally independent DC inputs for engine and solar regulation charging to a single house battery bank
• Dedicated MPPT solar regulator with up to 45V / 800W input
• 12V vehicle input with optional 24V operation
• Large DC M6 screw terminals for robust battery cable connections
• Temperatures up to 40+°C with thermo-controlled cooling
• Fully automatic multistage charging: Bulk/Boost, Absorption, Float
• Battery chemistry versatility: GEL, AGM, Flooded, Lithium, and customizable profiles
• Includes temperature sensor for precise, safe charging
• No external relays required; all switching managed inside the unit

Why this matters for real-world use

In a campervan or boat, you need a charging solution that respects space, wiring simplicity, and battery longevity. The Enerdrive DC2DC+ 40A charger does the heavy lifting by intelligently harvesting solar power when parked and leaning on the alternator while you drive. The dual-input architecture ensures your living space stays powered from a reliable battery bank, with advanced charging algorithms that prolong life and maximize usable capacity. The combination of MPPT efficiency, flexible battery support, and clear, actionable data visibility makes this a standout choice for anyone serious about off-grid power.

Ideal for

• campervans, motorhomes, sailboats, and boats requiring dependable 12V battery management
• off-grid travelers who rely on solar gains and engine charging to keep essentials ready
• DIY installers seeking a single, integrated solution with robust protection and simple setup

With the Enerdrive DC2DC+ 40A Charger, you’re not just buying a charger—you’re investing in a smarter, longer-lasting battery ecosystem for your mobile lifestyle. It’s a compact, powerful, and intelligent solution designed to make every mile or nautical mile powered with confidence.