The Enerdrive ePOWER DC2DC+ Battery Charger is a fully automatic multistage, multi input battery charger with the ability to charge from either an alternator linked to a battery; or via solar power with the in built Maximum Power Point Tracking (MPPT) Solar Controller.

With two inputs available, the main/house battery will be charged from either the engine while underway, or via the solar panels when stationary. The process to choose either engine or solar is fully automatic and both functions are controlled from within the unit itself without the need for external relays.




Let us know if you need help with the right fuses, circuit breakers or cables. We can supply the whole package for you.

During normal operation the Enerdrive EN3DC40+ Battery Charger will do a full charge cycle to float stage on the house battery bank with ability to choose either GEL, AGM, Flooded, Custom Programmable or Lithium. Once float stage is reached the charger transitions to a power supply mode to support any on-board DC loads.

Multistage Charging Process
The Enerdrive EN3DC40+ Battery Charger is a fully automatic, set and forget charger. It is designed to quickly and accurately recharge your deep cycle batteries utilising charger algorithms that help to maximise the life of your specialised deep cycle batteries.

The Enerdrive EN3DC40+ Battery Charger features multistage smart charging technology that enables the charger to be connected to your battery bank permanently. With the input of multiple sources, you can be assured of charging your batteries whenever underway; or when the sun is shining on your solar array.

As dictated by battery manufacturer’s recommendations, deep cycle batteries require a multistage charge sequence for perfect, fast and accurate charging. The Enerdrive ePOWER DC2DC+ smart charger delivers three primary charge stages.

Stage 1 – Bulk or Boost charge; The battery is charged at full rated output current of the charger until the battery reaches its final charging voltage, known as its absorption voltage. In this step, around 80% of the battery is recovered as fast as possible.

Stage 2 – Absorption Charge; With the charger voltage held steady, the remaining 20% is replaced with the charger allowing the current to taper off as the battery approaches full charge.

Stage 3 – Float; Finally, in the float stage the charger voltage is lowered and held at a constant and safe predetermined level. This prevents the battery from being overcharged, yet allows the charger to supply enough current to make up for the self-discharge losses of the battery, while supporting any additional loads connected to the battery (such as DC lighting and refrigerators). This stage allows for the charger to be used as a DC power supply.

Smart Charging Feature
The Enerdrive EN3DC40+ Battery Charger will regulate its output based on the loads connected to your battery bank. This function is important to maintain the life of your battery bank as some battery chargers mistake loads for discharge and continue to keep the batteries in the bulk or absorption stage for extended periods of time, which will damage the battery bank. The ePOWER DC2DC+ Battery Charger has two methods of load based regulation to ensure your battery charger transitions to float when it should do so.

Features Include:
• Two totally independent DC Inputs for both engine and solar regulation charging one house battery bank output
• DC M6 screw terminals that will allow for large battery cable connection between all sources
• A dedicated Maximum Power Point (MPPT) solar regulator
• The same battery algorithms as included in the AC mains Enerdrive battery charger. GEL, AGM, Flooded, Lithium and the ability to create a full custom profile
• Vehicle input allows for either 12 or 24v and a maximum solar input of 45V/800W
• 40A output up to 40+°C with thermo controlled fan cooling
• Fully programmable LCD display to show which source is charging the battery along with charger status, voltage and amperage
• Temperature sensor included in charger for more accurate battery charging

*See full terms/conditions over here


Brand Enerdrive
Shipping Weight 3.6000kg
Shipping Width 0.370m
Shipping Height 0.140m
Shipping Length 0.270m
Shipping Cubic 0.013986000m3
Unit Of Measure ea




How much solar can I put through the EN3DC40+?

Up to 800W with high voltage panels (up to 45V open circuit),  or up to 600W for regular panels (approx. 20V open circuit)


What size battery is this suitable for?

This unit is adjustable from 5 to 50Amps, so will suit any size battery bank. Keep in mind that the larger the battery/bank the slower they will charge, and be sure to check the charging rate on smaller batteries so as not to charge faster than the recommended rate.

Also you will need to ensure that your vehicles alternator is able to handle the current draw required. 


What size circuit breakers do I need for installation?

You will need a 60A and 70A circuit breaker for installation. We recommend circuit breakers over fuses as they are resettable and can be used for isolation. You can find the AllSpark Circuit Breakers over here. 


What cable size do I need for installation?

Cable size will depend on the length between your DCDC and the battery.  From 0-3m use 6B&S; 4m use 4B&S; 5m use 3B&S; 6m use 2B&S; 7-8M use 1B&S; 9-10m use 0B&S; 11 to 12m use 2/0B&S.

Please see the table below for more information.

please contact us if you require the cable to be pre-terminated. 


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