Originally Posted by
acroy
My overvolting experience was poor.
at 12 volts, my MR11 20 watt 12 volt bulb never died after maybe 1000hrs.
at 14.4 volts, it died in a week. Replacement bulbs lasted maybe 5-100 hrs. I used several brands, no real difference.
the light was awesome. But, contrary to other's assertions, the bulbs always burnt out in the middle of the ride, while being used.
ah well....
Then do what I do, run 2 bulbs with an A-B switch. If one burns out I can just flip it to the other. But I haven't had to yet because the bulb hasn't burned out on me. Redundancy is the key to having light. I have 2 MR16's wired up to a switch, a Cree xre headlight, and another 3 LED cheapie on the bar in case the rest fail.
I ride pitch black trails and can't afford to be without light.
Bang for the buck, the overvolted MR16 is the way to go...