The Battery Tender® Selectable Chemistry  Power Tender® Battery Charger offers versatility, ease of use, and power all in one! Choose between 15 AMPs, 8 AMPs, and 2 AMPs using the charge rate selection button to find the best power level to fit your car, boat, industrial vehicle, and more. The LCD display shows your charging status, charging current, voltage, battery type, and any error messages so you're informed throughout the charging process. Our smart charging technology helps extend the life of your battery!STAY CHARGEDThe 15 AMP car battery charger automotive provides a full charge to your machine's battery before automatically switching to float mode to maintain proper voltage levels for your battery without overcharging    CONNECT AND FORGETWith a low maintenance design, our universal vehicle charger and maintainer is compact, lightweight, and easy to operate even in small storage space for your convenience      MONITOR POWER LEVELSA solid state two-color LED light indicates the charging status and if the battery voltage drops too far under load, ISM adaptive charging will resume full charger output power.  Interactive LCD display shows charging rate selected, battery type selected, battery percentage charged, error messages    SAFE AND SECURESpark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power.    VERSATILITYEasily switch between Amperage levels 15 AMP / 8 AMP / 2 AMP.  Compatible with lithium (LiFeP04), lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell).California Residents WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov