A battery charger adapted to be electrically connected to the terminals of a battery for providing a charge to the battery, the battery charger comprising a device for supplying charging current to the battery, the current supplying device being operable to alternatively and selectively supply current...http://www.google.com.au/patents/US5168205?utm_source=gb-gplus-sharePatent US5168205 - Method and apparatus for charging a battery in high amp and automatic charging modes
