Schumacher electric automatic SpeedCharge chargers are offered in a choice of amperages for all of your charging needs. These chargers monitor your battery's condition and adjust the charge rate downward to prevent battery damage. They have a self-adjusting charge rate for everyday charging needs and keep your battery in peak condition! A 2 amp slow-charge charges and maintains smaller batteries and 50 amp clamps attach to top and side mount battery posts. Schumacher Electric automatic SpeedCharge chargers are a great choice for fast and durable performance.