I would like to have my cameras attached for charging and attach a lightweight portable power bank outside, for example in a plastic case. Which of anchors is suitable? Must be available in Germany.
We recommend this one:
Are any solar charging panels suitable?
As long as they can use a Micro USB plug and are safe to charge phones.
But isn’t the battery supposed to last 1 year?
I guess the camera will not charge no matter what you use if they are mounted outdoor and the temperature is below 0C (pretty much mostly in Canada)
Correct. This temperature is lower than the charging threshold will allow.
I suppose there might other issues occur, when the camera is used if there are temperatures under 0 Celsius.
Well, in these cases, the battery would shrink (as all lithium ion batteries do), but it shouldn't effect useage. The battery will grow back to it's normal size once the temperature lets off.