I've got a 501B and a 502B torche that I use when I night ride. I use old laptop battery cells for the lights and they are much shorter than a cell with low voltage protection. The light on the bars will change modes because the battery will bounce between the two springs and lose contact. Just wondering if anyone has come up with a sneaky fix other than wrapping the cell in tape or something.
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Thread: 501B and 502B Changes Modes
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