Oneil  550041-100, DR10 Printer battery replacement Replaces 550041-100, DR10 FITS Following This 6v battery is designed for the Sony with a capacity of 2100 , it is manufactured by our ISO 9001 certified supplier to a very high standard. Please note some of our extended batteries may be supplied with a rear cover to facilitate the greater capacity which may hinder fitting in any holders you may have. 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: Ni-MH Battery Voltage: 6V Battery Capacity: 2100