Thread: Serfas USB (TSL S250) Headlight
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Old 11-23-12 | 08:10 AM
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kmv2
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Serfas USB (TSL S250) Headlight
https://www.serfas.com/products/view...hts|usb-lights

Anybody used one of those or similar?

Just wondering what kind of battery life you get out of it? I can't seem to get more then 30-60minutes out of it.
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