Compact, Light and Powerful the Mighty Max 12-Volt 4 Amp charger provides an enhanced charging method that will not damage your batteries when left connected. Mighty Max charger provides a short circuit protection, enabling the product to charge fully. This charger Float charges to ensure the batteries long life. Mighty maximum 12-Volt 4 Amp charger with Alligator clips. 3 stage professional charging method ensuring full charge, avoiding over-charging. Temperature/short circuit protection. Dual color LED - showing operation of charging progress.