Laser Alignment  3900, 3920, 550634, LB-1, LB-2, 0667-01, 550634 optical Laser survey battery pack 0667-01, 550634   FITS Following Devices Laser Alignment  3900, 3920, 550634, LB-1, LB-2 This battery is designed  with a capacity of 5000 , 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: 4.8v Battery Capacity: 5000