This Standard specifies requirements for secondary batteries for use with stand-alone power systems.Stand-alone power systems are those that are not connected to the power distribution system of an electricity supply authority. Stand-alone systems are supplied with power from one or a combination of the following sources: a photovoltaic array, a wind generator, a water generator or a diesel generator. This Standard specifies requirements for all types of batteries including lead-acid and nickel-cadmium and covers both vented and sealed cells. The Standard includes tests designed to verify the capacity, efficiency and life of batteries (see Appendices A to I).