No problem. For Britain and my previous £1-a-day tour (Britain, France, Spain and Portugal) I used a foldable 3-panel solar charger, which had disappeared from Amazon when I wanted to buy a second one. So last summer I bought this - RAVPower UK RP-PC005(B) 24W - which is foldable and four or five panels but folds smaller than the original one. So far it seems to work as well as the other. I need to buy another powerbank and so far, with the new panel, I've just charged the phone/Kindle directly. When cycling with the three-panel I sometimes fastened the panel to the back rack but generally just charged it pointing in the perfect direction whenever I stopped. If the phone was full or nearly full then I charger the powerbank. Any more questions, fire 'em this way.