BP-BK9AA: Alkaline Battery case for Bendix King HT radios. Holds 9 x AA battery cells. Handy for providing instant high power to your BENDIX KING handheld radio. Fits Bendix-king radios for Aircraft, Business band, Military, Search & Rescue, etc. Suitable for use with alkaline (non-rechargeable) 1.5V batteries. Operating time is dependent upon the capacity & quality of batteries being used.