RENOGY 40A DC-DC Battery Charger with MPPT

This battery charger is designed to work with both conventional and smart alternators. However, because conventional alternators maintain a consistent voltage during charging, while smart alternators adjust their charging output based on operating conditions, it is necessary to connect the charger to the smart alternator using the IGN cable (ACC labeled) from the product through the Vehicle Ignition Port.

It's suitable for 12V Lithium, Gel, AGM, and Calcium batteries. This charger enables the batteries to reach a full 100% charge. Additionally, it has the capability to revive lithium batteries that have become discharged to a low voltage.

To change the battery type, press and hold the SELECT button on the side of the battery charger. The LED lights corresponding to each battery type will illuminate in sequence, indicating the available options.

Our product defaults to DC charging. To prioritize solar charging, simply press the SELECT button on the side.

Solar and DC charging will automatically switch based on the following conditions: 1) When the generator is running, the system will switch from DC to solar charging if DC input voltage is <11.3V and solar input voltage is >13. 2V) When the generator is off, it will switch to solar charging if DC input voltage is <12.7V and solar input voltage is >13V.