The Schumacher INC-4825A is a 48 Volt automatic battery charger with micro-processor controlled 15-25 Amp output and float-mode monitoring. The reverse polarity and short circuit protection will ensure this until will not apply current to the output connect until it is properly connected. Patent pending 'thermal runaway' protection stops charging if the charger detects that there is a problem with the battery. The automatic temperature compensation automatically adjusts the output voltage based on the ambient air temperature. Perfect for golf carts, tow tractors and people movers.