The remaining battery life of a battery powered device is predicted by monitoring the immediate past history of battery life and employing this immediate past history as a basis for subsequent predictions of the useful life of the battery. By this approach, the present invention is able to take into...http://www.google.fr/patents/US4743831?utm_source=gb-gplus-shareBrevet US4743831 - Apparatus and method for indicating remaining battery life in a battery powered device
Apparatus and method for indicating remaining battery life in a battery ...
