Universal Power Group 6V 1.3AH PARKS MEDICAL 909L 915S DOPPLER Battery UPG #D5731 UB613 6V 1.3Ah Dimensions: 3.82 inches x 0.96 inches x 2.28 inches. Weight: 0.64 Lbs SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty