12v internal batteryBattery chargerOn/off switchLow battery/ pulse indicator0.5 joule output10 watt solar panel5 year warrantyProduct DescriptionMedium power energiser with integrated, high capacity solar panel. Many solar energisers are lower in power and/or utilise solar panels, which are inadequate to keep the battery charged. We have designed the Fire Drake energisers to operate at popular power levels, suitable for a range of applications. The panels are carefully matched to replace the energy used whilst operating. A battery charger is also included to help keep the battery charged during the long winter months.