• Mine quit working the first time I used them, in the rain, after 3 miles, but I pretty much expected it, given that the battery and its contacts are completely exposed to the elements.

    So, I got home, dried it out (works fine), then cut up some polythene off a food bag and covering it, then securing it by winding a rubber band around it. It's a bit slap-dash, but I reckon it'll do the trick, come the next downpour.

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