Sandberg Powerbank 20000 for Laptop is a powerful backup battery for your laptop. Attach the included adapter suited for your laptop, and you are ready to charge your laptop from the powerbank. Depending on the power consumption of your laptop, the work hours on your laptop will be extended by up to 6 hours - without the need of a mains power socket. This Powerbank even features a USB port to charge your mobile USB device such as a smartphone, a tablet or a digital camera.