Renogy 12V 40A DC to DC Battery Charger w/ MPPT

Renogy 12V 40A DC to DC Battery Charger with MPPT

Keep a compatible house battery charged while driving or parked with a charger designed to switch between DC input and solar input. Use the SELECT button to set solar-priority charging for appropriate system conditions.

Switch between solar and DC charging inputs efficiently while maintaining dependable charging support for a compatible mobile power system.

Seamlessly Switch Charging Modes

When input voltage in the primary charging mode drops below the default threshold, the charger automatically switches to the alternate source to maintain efficient charging.

DC Priority

Solar Priority

Understand the Charging Logic Behind Each Model

Renogy presents the 40A model as switching between solar and DC inputs according to availability, while the compared 30A and 50A models support simultaneous dual input.

Get to Know the Key Points

The source comparison identifies the 40A model as a compact MPPT/DC-input charger with SELECT-button mode switching for compatible mobile power systems.

Stay Charged on the Move

Stay Charged on the Drive

Stay Charged on the Water

Multiple Safety Certifications

The live Description presents certification testing as part of Renogy’s focus on dependable off-grid power performance.

Wiring Diagram

The verified in-description wiring diagram illustrates a compatible connection layout for the starter battery, house battery, alternator and solar input.