DANTONA BCS50 Battery CS50/55/510/520/351/361/202599 Dantona replacement battery for CS50 Part number 65358-01 3.7V 230mAh Rechargeable Li-Polymer battery BATTCS50  Features:  mAh : 230 Rechargeable : Yes Replacement Headset Battery : Yes Volts : 3.7 Dimensions (LxWxH) : 6.5 inches x 3 inches x 0.25 inches Weight : 0.25 lbs Energy Star Qualified : No Recycled Packaging : No Country of Origin : China (provided by manufacturer, not verified) RoHS Compliant : Yes Type of Packaging : Retail Card Warranty : 1 year