November 09, 2013
I used this 6EX LED as a head light I made for my electric bike.
It's powerful beam is driven by a 7 cell NImH battery, 9Ah pack, producing 8.4 volts. Trick to prevent burnout is small, 6 volt brushless fan to cool 1-1/2" x 1"finned heat sink. Never had problem with dimming even when refresh charge exceeded 8.94 volts!
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