The Xtreme Charge doesn't just recharge your battery, it repairs it.

Intelligent circuitry immediately tests and evaluates the condition of your battery, then sets the optimum charge rate it's able to accept. This proprietary algorithm also protects the battery from damage due to overcharging. So your battery is back to its full potential, quickly and safely. As long as the Xtreme Charge remains connected, it continually tests your battery to maintain optimal bulk or float charge rate.
The Xtreme Charge has the ability to extend the life of your battery from 2 to 5 times longer. The patented PULSE technology minimizes the size of the lead sulphate crystals that form in any 12-volt lead-acid battery. This allows the battery to accept as much charge as possible.
The longer you leave the Xtreme Charge connected to your battery the pulsing continues to clean and repair. And by maintaining only the appropriate charge rate, the battery is safely maintained at its proper operating voltage indefinitely.