One charger, two power sources, maximum charge. The Enerdrive DC2DC 40+A (EN3DC40+) is a multistage, multi-input battery charger that pulls from your alternator while you drive, and from solar when you’re parked—thanks to the built-in MPPT solar controller. It’s lithium-ready out of the box and fully programmable from the front LCD, so you can dial in perfect charge profiles for AGM, Gel, Flooded or LiFePO₄ systems.
Why it works so well in Aussie touring rigs
• Real MPPT solar (not PWM) harvests more energy through heat, haze and partial shade.
• Wide PV headroom (up to ~45 V Voc) lets you run modern high-voltage panels efficiently.
• 40A+ output up to hot conditions, with thermo-controlled fan cooling to keep charging hard.
• Alternate automatically between vehicle and solar inputs—your house battery gets priority charge, always.
• Full protections (over-voltage/temperature, reverse polarity, short-circuit) + included temp sensor to look after your battery investment.
Why buy from us
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Real 12 V system advice from installers who use this gear
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Fast QLD dispatch, honest stock status
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Safe everyday pricing + sharper clearance options when you need to move stock
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Local support before and after the sale
Key features
• 40A DC-DC output (user-selectable 5–50 A); up to 50 A from vehicle input*
• Integrated MPPT solar input (limit ~30 A); PV Voc up to ~45 V
• Recommended PV: up to ~500 W at <23 V input (600 W allowable) or ~750 W at 37.5–45 V (800 W allowable)
• Battery types: AGM, Gel, Flooded, Lithium + custom profile
• Programmable LCD shows source, charge stage, volts/amps; included temp sensor
• Protections: over-voltage/over-temp (derate), reverse polarity, short-circuit
• 5-year Enerdrive warranty
*Vehicle input must be higher than output voltage to achieve 50 A.
What’s in the box
• EN3DC40+ DC-DC Charger (with LCD)
• Battery temperature sensor
• User manual
Tech specs (quick)
• Model: EN3DC40+
• Output current: 40 A (selectable up to 50 A)
• System voltage: 12 V
• Solar input (MPPT): 14.5–45 V Voc (limit ~30 A)
• Vehicle input: 10.5–16 V / 21–32 V
• Peak charger efficiency: ≈95%
• Size (H×W×D): 242 × 172 × 74 mm
• Unit weight: ≈1.85 kg
