On 19 October 2011 08:31, Paul Olivier <[email protected]> wrote:
> Crispin, > > I have seen a rechargeable 12-volt battery that it quite small. > This could be used in conjunction with the thermo-electric generation of > electricity. > But in countries where motorbikes are commonplace, then it is simpler to > tap into their batteries. There are motorbike batteries - and presumably also mobile phone batteries freely available in most places in the world now aren't there ? Steve
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