Stay Charged: The 4 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 Fully Selectable: With the push of a button, easily switch from AGM or flooded and lithium ion (LiFePO4) batteries to provide and maintain an optimal charge level for 6 and 12 volt batteries alike Includes: 4 AMP battery charger, ring terminal and alligator clip combo cable, 5 year warranty, and lifetime customer service Monitor Power Levels: A 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 Secure: Spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power