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Old 06-04-07, 04:34 PM   #1
dijos
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can you change a generator light to battery?

My wife wants a specific look for this project, and part of that is a 40's-50's style headlight. I've found them with generators, but she informed me that she does not want a generator, she wants batteries. since it's electricity, I will make the huge leap of logic that all I will need is a battery, terminals, some kind of housing, a switch and the light(s). I'm not looking for KC daylighter output here, just enough to approximate what a generator would produce, or hopefully a little better.

I Would love some input, thanks.
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Old 06-04-07, 05:06 PM   #2
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First you'll need to know what voltage the bulb requires. I expect most are 6V but they may be 3V or 12V. The bulb really doesn't care where the power comes from.

Second, most bulbs used with generators that I know about are 3 watts so the battery size will depend on how long the light is expected to run on one charge. For example, to get a two hour run time at 6V you will need a 2 amp-hour battery. Larger batteries will give longer run times.

SLA (sealed lead acid) batteries are the lowest cost but heavy for their capacity. NiCd, LiMH and Li-Ion are respectively lighter and more costly.
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Old 06-04-07, 05:36 PM   #3
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Before you decide against a generator light, have you seen the Busch-Mueller Lumotec Retro?
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Old 06-05-07, 06:52 AM   #4
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Quote:
Originally Posted by CHenry
Before you decide against a generator light, have you seen the Busch-Mueller Lumotec Retro?
I am not against a generator light, I have one on one of my bikes. She does not want the extra drag, although that light is almost the exact style I'm looking for.

Sadly, I am not in the market for a dynamo hub, which would be my preferred option. I can't afford one at the moment, and I am not going to relace a wheel for this particular bike.
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Old 06-05-07, 10:12 AM   #5
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Bike World USA has the light you need. It uses two "C" batteries contained within the light for a clean and easy install and use.
http://www.bikeworldusa.com/product_...roducts_id/409
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Old 06-05-07, 07:15 PM   #6
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Did this years ago when I converted a Union 6 volt generator system. I bought from Radio Shack a battery pack for 4-D cells and a simple rocker switch. Not exactly dainty or compact, but has worked reliably on 2 bikes and still use one of them today while the other sits in the closet.
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Old 06-10-07, 08:03 AM   #7
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Hey, thanks, everybody.
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