Sandberg powerbar is a portable battery which is charged via a usb port and can then transfer the power to a mobile phone or other mobile device with a fully charged powerbank in your bags you can ensure that you will always be able to charge your devices anywhere anytime ndash without having to depend on a power socket look forward to a future without dead batteries features lithium ion grade a battery capacity 2200 mah input voltage 5 v output voltage 5 v input current 60