A system designed to optimise the use of battery power. To ensure this across all devices, our batteries recognise which device they are currently being used in and adapt the energy output to the connected device. This enables a longer runtime and longer battery life expectancy in hand-held devices and lawn mowers. The battery is equipped with a practical button for checking the charge status. It also always displays the current charge level during operation. This battery is compatible with all appliances in the STIGA 500 series.