Overview Product Description Welch Allyn 76100 Battery Voltage: 3.6 Volts Capacity: 110mAh Chemistry: NiCd - Nickel Cadmium Dimensions: N/A Replacement for: WELCH ALLYN (GRASON-STADLER, PROTOCOL)72500, 76100Pneumo Check, Spirometer 6100 (Requires 2/unit) Product Videos Custom Field Product Reviews