Quote:
Originally Posted by Aire valley
If you are outdoors....use a leisure battery or generator....if indoors..use a leisure battery or mains supply..  ....what else would you need..? 
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Well, I heard about a device that you could charge up and then use to charge your mobile phone or tablet if needed.
Yes, I know that says you want a leisure battery but these are heavy. I just wondered if there was an alternative that meant you didn't have to lug a leisure battery about or hope you could get access to mains power.