The Ultratec Stand-By 200 is a rechargeable lithium light made to be ready when the power goes off. With an output of 200 lumens it lights a room, passage or kitchen well enough to cook, read or find your way around during load shedding, and it is equally handy in a tent or caravan. The built-in rechargeable lithium battery means no disposable batteries to buy, and it is light and compact enough to carry from room to room or pack for a weekend away. Keep it charged in a central spot so the whole family knows where to find it. Check the packaging for runtime and charging time.