Cameron sino 1800mAh Li-ion Rechargeable Battery BP-722 Replacement For ICOM ID-31A ID-31E ID-51A ID-51E 12 Months Warranty Replacement for the Following Battery Model/Part Numbers:BP-722 Compatible with the Following Models:ICOM ID-31A, ID-31E, ID-51A, ID-51E Capacity: 1800mAh / 13.32Wh 7.4V Li-ion Rechargeable Battery Pack. Cameron Sino Over 10 Years Battery Manufacturing Experience