S.Giles
Guest
I'm happy with one of these that has been modified to use an external Li-ion battery which I tuck up under the saddle. The Li-ion is about 4V so it now runs much brighter than the standard light did with 2 x AAA cells, and it's also now re-chargeable. It should do well in excess of twenty hours between charges, although I've never let it go that long.
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