BikeMaster Intelligent Battery Charger / Maintainer The BikeMaster Intelligent Charger/Maintainer is ideal for charging/maintaining many types of batteries. This fully automatic battery charger detects 6- or 12-Volt, reverse polarity, overcharge and short circuit protection in addition to testing if the battery is good or needs replacing. It has easy-to-read LED lights that indicate power on, 6- or 12-Volt selection, 2-Amp or 4-Amp charge rates and the status of the battery charge. Features Color-coded alligator clip leads and color-coded quick disconnect battery terminals 6-Volt mode has a bulk charge rate of 2-Amps 12-Volt mode has a selectable charge rate of 2-Amps and 4-Amps A float charge of 1.5-Amps is used for absorption: a constant high current for extended periods of time can damage a battery to rectify this issue, constant 1.5-Amps low charging current is given until the battery is fully charged (13.6-Volts) The charger monitors the battery voltage: if a 12-Volt battery voltage falls below 12.8-Volts (6-Volt battery falls below 6.2-Volts) the charger automatically restarts the charging cycle the maintenance charging cycle is repeated indefinitely, thus, allowing the charger to stay connected worry free Recovery mode is used to revive batteries that are not completely dead but have fallen below 8-Volts the recovery mode charges at a constant 1.5-Amps the recovery process automatically switches to the regular charging mode when the voltage reaches 10.5-Volts the charger will then automatically switch from charge mode to maintenance mode when the battery is fully charged Sleek, durable composite housing for long service life Five-year manufacturer's warranty