Sennheiser Ba300 Battery

SENNHEISER BA300 LI-POL 140mAh Empire 3.6V Replacement Lithium Polymer (Li-Poly) BA300 Battery Pack for Sennheiser IS410 / RI410 Infrared Headphones (CPP-523) Length:1.26 Width:0.98 Height:0.37 Condition:New Specifications Able to function in Sennheiser IS410 and Sennheiser RI410 Chemistry: Nickel Metal Hydride Battery Capacity: 140 mAh Voltage: 3.6 Volts Dimensions: 1.5 in x 0.75 in x 0.13 in Weight: 3 oz.