As a battery charger, the unit will maintain the battery, delivering its full-rated current when the battery capacity falls sufficiently low.  The voltage is set to deliver its maximum current for the necessary period of time to minimize undue stress to the battery caused by heating of its cells.  This helps to ensure the longest possible life of the battery.  Over time, as the battery nears its full capacity, the DLS27-25 will automatically drop the current, providing a float-charge to the battery to prevent self discharge of the cells.

The DLS27-25 provides AC/DC conversion up to 25 amps and features a Dual Voltage Jack, allowing the user to manually select between a nominal charging voltage of 27.2 or a stepped-up charging voltage for faster battery charging.