The EnerSys® range of PowerSafe® VE valve regulated lead acid batteries has been designed to offer competitive solutions for the global telecommunications and information technology markets. PowerSafe VE batteries incorporate selected design features for the cost-conscious user, whilst retaining superior performance by weight and volume, increased flexibility of installation and reduced maintenance. PowerSafe VE batteries are designed using proven gas recombination technology which removes the need for regular water addition by controlling the evolution of hydrogen and oxygen during charging. Oxygen evolved at the positive plates diffuses through microporous separators to the negative plates, and, by a series of chemical reactions within the cell, recombines to form water. Each cell incorporates its own safety valve that allows the controlled release of gas when pressure builds up within the cell. The use of gas recombination technology for lead acid batteries has totally changed the concept of standby power. This technology provides the user with the freedom to use lead acid batteries in a wide range of applications. The overall design, material specification and construction of PowerSafe VE batteries make them most suitable for other more traditional sectors, such as emergency lighting and engine starting.