HQRP Battery compatible with Bose PC40229 PC-40229 40229 40227 NTA2358 2358 fits QC3 QC-3 Quiet-Comfort 3 Acoustic Noise Cancelling Headphones plus HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.7V; Capacity: 180 mAh; Li-Ion; 100% compatible with Original Battery; 200 Days warranty!