Sterling Power Battery to Battery Charger 12V Input to 12V Output 40amp DC Powered Charger

BUCK BOOST DESIGN - offers high efficiency (95-98%). Because the charger doesn't waste much energy, it stays remarkably cool even when running at maximum output for hours. SIMPLE INSTALLATION and setup. Just choose the battery type, and whether you want to trigger the charger from alternator voltage, ignition trigger, or vibration. BI-DIRECTIONAL CHARGING to keep your start battery topped up. If you have solar panels supporting your house battery, the charger will ensure that your start battery is topped up and ready to go. You can also initiate a "jump start" mode should the start battery become depleted. CURRENT LIMITING to protect your alternator from damage. LITHIUM SAFE with two different lithium profiles, plus low temperature trip specifically for lithium ion batteries. SMART ALTERNATOR/Euro 6+ compatible for Sprinter vans and similar. IGNITION FEED or VIBRATION SENSE modes can be used for turning the charger on and off, in addition to the default voltage sense mode that works with most vehicles. 6 PRESETS for almost any battery type, and 6 self-recovering protections to keep your system safe.