Replacement battery for Cygolite HotShot
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I have a couple Cygolite HotShot tail lights (80 & 150 lumen). The battery failed on the 'Pro' (150 lumen) one. When plugged into USB it just stays on constant rather than the pulsing for normal charging and when unplugged it is totally dead. I swapped batteries with the '80' to verify that the...