The Interacter "LS" battery charger is specifically engineered to meet the demands of the informed consumer who knows that today's Hi-Tech batteries must be charged correctly, at a competitive price. Like the Professional Series, the Lineage Series features a microprocessor controlled system that out-performs industry standard chargers in its price range. The LS has our patented three stage constant current, constant voltage charging format. The most important feature of the LS is the exclusive proportional timing which automatically adjusts the recharge time in order to achieve optimal performance on old, partially or deeply discharged batteries.