The Battery Tender® 5 AMP charger is your go-to for quick maintenance and recharging. Fully automatic and easy to use, this charger uses a four-step charging process: initialization, bulk, absorption, and float. Once your battery is fully charged, this 5 AMP switches to float mode to prevent overcharging. Use our 5 AMP charger with lithium and lead-acid batteries, including flooded or sealed maintenance-free batteries such as AGm and Gel Cell. Suitable for cars, tractors, boats, SUVs, trucks, RVs, and more, this charger's versatility is unmatched. It also features a 72-hour timer to protect weaker batteries from damage.STAY CHARGEDThe powerful 5 AMP charger provides a full charge to your automotive vehicle’s battery before automatically going into float mode to maintain proper voltage levels without overcharging. 5 amps 12 volt charger and maintainer    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    INCLUDES5 AMP battery charger, ring terminal and alligator clip combo cable, 5 year warranty, and lifetime customer service    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. It is UL/CSA, CE and BC approved   SAFE AND SECURESpark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power.    EXTENDED BATTERY LIFECompatible with lead-acid, flooded, and sealed maintenance free batteries (AGM and gel cell) ideal for use in long term storage to provide and maintain an optimal charge. Input voltage 120VAC @ 60 HzCalifornia Residents WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov