MartinRausch5 years ago000Hello, Can I also use the device when it is connected to a power bank for charging (e.g. when the battery is exhausted during a tour)?Show in original language (German)SonjaHenz5 years ago000 Helpful answerHi, we tested this and it worked. The battery really does last an amazingly long time. We are very satisfied.Show in original language (German)Commentpeter5 years ago000Works without problems, but unnecessary, because the battery lasts easily 2-3 days and if you charge it at night, it lasts again for 2-3 days. Super device.Show in original language (German)Comment