NiCD Replacement for Uniden BT294 Battery - Fits SPH21 Looking for reliable performance from your Uniden BT294 Two-Way Radio? Our Uniden BT294 battery will provide you the performance and dependability that you demand for your Two-Way Radio. With an efficient rating of 7.5V Volt and 800mAh , you never have to worry about being too far from an ac outlet. Our line of Uniden BT294 batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. With an industry leading warranty and customer service, you can’t go wrong. ... More Info