Don't be caught without power when you need it. Ensure that your batteries are always charged with the Streamlight Stinger Piggyback Charger. Suitable as an extra backup charger for your home in your car, the Streamlight Stinger Piggyback Charger is capable of charging a flashlight and an extra battery at the same time. The piggyback charger is sold without charger cords. The L843B charger power supply is required to complete the charging station.