Get reliable performance with the Energizer Cr2016 3v Lithium Battery (Dl2016 Ecr2016 CR 2016). It is compatible with various electronics, including computer accessories, pet collars, watches and more. This lithium coin cell battery is simple to install. It is available in a convenient pack of eight batteries so you can stock up for emergencies. Keep them packed with your camping gear for peace of mind. The batteries store well in a cabinet or drawer until needed.