Pack Voltage Reduction To Run a Light

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st35326
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Pack Voltage Reduction To Run a Light

Post by st35326 » Dec 08, 2017 10:20 am

Anyone have a solution for reducing pack voltage so I don't have to run a separate battery back to run a headlight on my bikes?
For you guys running 20s, 21s and 22s how are you dropping the voltage from 80vdc to 12vdc etc?

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alec
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Re: Pack Voltage Reduction To Run a Light

Post by alec » Dec 08, 2017 10:28 am

https://endless-sphere.com/forums/viewt ... =2&t=91812

I literally just asked the same question, haha.
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cycborg
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Re: Pack Voltage Reduction To Run a Light

Post by cycborg » Dec 08, 2017 2:40 pm

I use a 6 V, 3 A supply that costs $7.68 on Amazon. I chose 6 V because this is the standard for bike dyno lights, and I really like the European bike headlights with the sharp horizontal cutoff and distributed beam. I use a Supernova E3 headlight and a B&M taillight, don't remember the model.

If you prefer 12 V, I don't have a specific recommendation, but see if you have any 12 V AC-DC converters lying around, or order an inexpensive one. Chances are they will work, especially with 20s or more. If it doesn't work on the first try, you might have to switch the input polarity.

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Skaiwerd
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Re: Pack Voltage Reduction To Run a Light

Post by Skaiwerd » Dec 08, 2017 6:30 pm

I try to buy lights that are multi voltage meaning they work from say 6 to 80 volts. AliExpress and Banggood are my main sources.

Apex
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Re: Pack Voltage Reduction To Run a Light

Post by Apex » Dec 09, 2017 11:55 am

I'm thinking of using this converter for my lighting.
Simple, small, robust housing, trusted vendor.

http://sickbikeparts.com/voltage-converter-12v/

Input = 36v/72v

Output = 12v @ 10A

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