• Versatile Battery Types: This 12V 40A DC to DC charger is compatible with lead-acid and lithium batteries, and works with various alternator types. It is ideal for charging standby batteries in RVs, trucks, and boats
• Multiple Protections: Built-in over & under voltage, high temperature, reverse polarity protection ensure this on-board battery charger runs smoothly and securely. The isolated input/output keeps your vehicle's electrical system from interference
• Smart Multi-Stage Charging: This battery charger features multi-stage charging modes for LifePo4 (2-stage) and lead-acid batteries (3-stage: bulk, absorb, float). It ensures an optimal process to fully charge your battery and extend its lifespan
• Compact and Easy to Install: The sleek aluminum alloy design comes with pre-drilled mounting holes, allowing you to install this DC to DC charger anywhere with ease
• Wake Up Your Batteries: With its lithium battery activation feature, this DC to DC battery charger can quickly bring idle or deeply discharged batteries back to life, making them always ready for use when you need

VEVOR 12V 40A DC to DC Charger Battery Charger 500W for Lead-Acid Lithium AGM
Efficient Charging
Comprehensive Protection
Reliable Performance
Revive Resting Batteries
Battery Assistant
Easy Monitoring
Charging Current: 40A,Casing Material: Aluminium Alloy,Input Battery Voltage Range: DC 8V-16V,Charging Voltage Range: 13.2V-14.7V (Lead-acid Battery), 12.6V-14.6V (Lithium Battery),Operational Temperature: 4 °F to 122 °F/–20 °C to 50 °C,Item Model Number: SDC-40A,Maximum Output Power: 500W,Input Voltage: 12V,Compatible Battery Type: Lead-acid & Lithium Battery,Net Weight: 3.31 lbs/1.5 kg