A method and apparatus for charging nickel-cadmium batteries with a current greater than 2C rate. The cell temperature or both the temperature and voltage thereof are monitored, and the charging operation is halted upon detection of a moment when the rate of temperature increase of the cell became at...http://www.google.ca/patents/US5541496?utm_source=gb-gplus-sharePatent US5541496 - Apparatus and method of rapidly charging nickel-cadmium batteries