Patent ID: 7737655

Claim:
In an electronic control module for a battery for a light source, a method of regulating battery power comprising: a) initializing the controller; b) providing an initial low current to the light source; c) testing the battery voltage for an initial low battery condition; d) testing for a shorted condition of the light source; e) determining a type of the battery connected to the light source; f) determining a low battery voltage based on the battery type; g) determining if the battery temperature is below a preset level; h) if the battery temperature determined in step g) is below the preset level, conducting the additional steps of: i. calculating a warm-up rate for the type of battery based on the battery temperature; and ii. increasing battery current gradually based on the calculated warm-up rate as the battery warms up due to current flow through an internal resistance of the battery; i) determining if the battery voltage is above the low battery voltage; j) providing a full battery current to the light source if the battery voltage is above the low battery voltage.