Another Supercharger 2 user here. Primarily brought for adventure touring in Western Australia. I thought I would need the range quite often, given my chosen routes, but after June's tour last year, I reckon I can get two days between charges regularly, which is good as it means more camping and less town. I can squeeze out around 180 km I think.
Proof of concept pre-tour ... panniers were the big change.
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by https://www.flickr.com/photos/aushiker/, on Flickr