Keep your essential electronics running smoothly with the SQMY R20 (Size D) Battery Set. Known for their “High Power” performance, these heavy-duty batteries are engineered to provide a consistent 1.5V output for devices that require a larger, more stable energy source. Whether you are powering a vintage radio, a large flashlight for emergencies, or a gas water heater, SQMY delivers long-lasting reliability in a convenient 2-pack.