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What if, how about..


Old 09-20-12, 07:53 PM
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What if, how about..

I put 30 of these in parallel with my 36 volt battery. Then I'd have a handy little battery box to tap into all kinds of voltages to run my 3.6v headlamp and 2.4v tailight. Only question is, can the coin cells deliver the amps?
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Old 09-21-12, 07:47 PM
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No dice . . . you might get those to run your headlight and tail light for a couple of minutes but that is all before they would be fully drained. What you need is a DC to DC power converter. You will probably have to two stage it. Ebikes.ca sells a DC to DC converter that will turn most common motor battery pack voltage levels (36V, 48V, etc.) into 12V and then there are universal voltage converters designed to plug into an automobile 12V cigarette lighter socket that will turn 12V into just about any voltage with a multi-position switch to cover a wide range of voltages. If you were to wire those two together you can get almost any voltage you want off of your main battery pack to power your accessories. A couple quick links (the second link to the amazon product is only one of many available to turn 12V into most other voltages).



If it where me though I would strongly suggest that 12V automobile voltage is your best bet in and of itself though, they make LED tail lights for automobiles (get the kind that are universal round or oval shape used for commercial vehicles) that are way brighter then anything made for a bicycle that will run straight off the 12V and you can wire in a cheap universal automobile blinker unit to make it blink instead of just steady on if you want. Rigging up an LED headlights assembly to run off of 12V takes a little more ingenuity and effort but it can certainly be done. 12V gives you a lot of options in that it opens up the entire automobile accessory and component inventory for your use and you can even go all out and rig your e-bike will full size and brightness tail lights, brake lights, and turn signals. Although I strongly suggest doing everything with the LED technology lights to keep the power drain under control.
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