Now that summer is upon us and we'll all be living off-grid at various festivals and wild camping in the back of beyond has anyone in EB world got any first hand experience of portable solar chargers? Mainly for topping up smart phones and tablets - not necessarily for adding juice to the leisure battery. I realise that the words "sunshine" and "UK summer holiday" are often mutually incompatible but I'm off in the bus to Tiree for a week in July for the Tiree Music Festival and Tiree regularly posts the best sunshine record for any place in the UK so a solar charger in the UK might not be an oxymoron after all and who said Scottish weather is crap anyway.