Overview Product Description Welch Allyn 1770-9672 Battery Voltage: 7.2 Volts Capacity: 1000mAh Chemistry: NiCd - Nickel Cadmium Dimensions: N/A Replacement for: WELCH ALLYN (GRASON-STADLER, PROTOCOL)Audio Path, GSI 70 (1770-9672) Product Videos Custom Field Product Reviews