LED replacement for bike light bulb
October 23, 2006 7:30 AM Subscribe
Replacing a halogen bike light bulb with LED
posted by primer_dimer to Sports, Hobbies, & Recreation (8 answers total) 1 user marked this as a favorite
I've got a cheap 10 Watt rechargeable halogen bike light that came with a heavy SLA battery pack. I've been thinking about building a nice light NiMH battery pack (6V) to make it a bit more portable this winter. The bulb is a standard MR16 6V 10W bulb. Out of interest I had a look online to see if you can get LED replacements for these and it turns out you can. Is there any reason I can't drop in on of these
(the 3 watt luxeon mr-16 builb) and build my battery pack to 12V instead? Anyone care to take a guess at whether this would be brighter / dimmer than my current bulb? I've seen it claimed that a 2W LED puts out the same amount of light as a 20W halogen bulb, but I doubt it's that simple (although I'd be delighted to learn that it is!). Since the LED bulb draws ~300mA rather than ~2A I could make a lighter battery pack for the same runtime, even though I'd need double the voltage.