Voltcraft pb series li ion power bank usb battery chargers with built in torch voltcraft pb 19 the voltcraft pb 19 power bank is a high performance high quality portable power source ideal for charging up your mobile phone tablet sat nav etc when you are out and aboutthe compact and lightweight 20800mah battery pack fits easily into your pocket or handbag and goes with you wherever you go so youve always got back up power for your indispensible mobile technology voltcraft pb 19 po