It is crucial that readings taken from medical equipment are true and accurate. To achieve this when using battery powered medical equipment, its is crucial that the source of energy that powers the equipment is reliable. The Duracell J battery provides reliable and long lasting energy to the devices it powers. This battery is part of the Duracell Plus range, which provides 30% more power than standard Duracell batteries. The Duracell J battery also has a long storage life of up to seven years.