Rapoo  2900 Touch,C010721HSP , cordless mouse / keyboard battery replacement   Replaces  batteries C010721HSP To fit Rapoo  2900 Touch This 3.7v battery is designed  with a capacity of 700mAh , it is manufactured by our ISO 9001 certified supplier to a very high standard. As we supply a very large range of batteries we cannot always have stocks of the slower moving lines as batteries have a shelf life and we insist on quality control for our customers, which may mean slightly delayed shipment date, where this is necessary you will be advised by email. Battery Type: Li-ion Battery Voltage: 3.7V Battery Capacity: 700