Bose QuietComfort 3 Battery - Replacement for Bose Headphones Battery (180mAh, 3.7V, Lithium-Ion) - Compatible with Bose 40229, Bose NTA2358, Bose QC3, Bose QuietComfort 3 Replacement for Bose QuietComfort 3 Battery, Bose 40229, Bose NTA2358, Bose QC3, Bose QuietComfort 3 Battery Capacity: 180mAh, Voltage: 3.7, Type: Lithium-Ion Lifetime Warranty On Sale for a Limited Time! Grade A Quality. High Capacity.