The Anker PowerCore III Elite 26K 60W that is named as suitable for the R3 doesn't appear to available anywhere in the UK - Amazon has the usual currently unavailable... that usually means something has been discontinued. Is this the case for this powerbank? And, if so, does anyone know what the latest model/version of Anker powerbank is that is suitable for the R3 (I'm going to be away where there isn't an electricity supply and can't afford to buy more LP-19Es - I have 3 but that won't last the trip)