Abstract: A cellular mobile station having at least a first battery and a second battery and a method for facilitating completion of an E911 call sequence is provided. The method comprises of ascertaining whether a power level of the first battery is below a predetermined threshold and whether the cellular mobile station is in an E911 mode, the E911 mode representing one of an attempt to call an E911 center, an E911 conversation in progress, and an emergency call back mode (ECBM) in progress. If the power level of the first battery is below the predetermined threshold and the cellular mobile station is in the E911 mode, employing power from the second battery to facilitate completion of the E911 mode.