Magnetek will no longer be offering the BT10KP-0 battery for the following radio products: SLTX (black model) Transmitters Pendant-Style Transmitters The BT10KP-0 will be replaced by the rechargeable BT10KP-4 battery. Chargers are available for purchase for the BT10KP-4, reducing the cost for replacement batteries. Bt10KP-0 batteries can be ordered while supplies last.