Timeline for Can I secure a 12v battery to my bicycle to charge it? And then attach a 12v horn to it?
Current License: CC BY-SA 3.0
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| Aug 24, 2015 at 1:23 | comment | added | RoboKaren | Note that LEDs will light at lower than their nominal voltage. It's also AC so the peak voltage is higher than the RMS voltage and you're losing most of the energy if you only take the highest peaks. And yes, there are fluctuations in the peaks (most are current limited, not voltage limited), etc. etc. In other words, trying to charge a 12VDC battery from a 6VAC source is going to be an exercise in frustration. | |
| Aug 24, 2015 at 1:01 | comment | added | Móż | most hub dynamos will actually generate considerably more than 6VAC unless there's a voltage limter in the dyno. Mine will happily run a 10V/500mA white LED, for example. I'm not confident they'd go to 13.5V to charge a 12V SLA though. | |
| Aug 24, 2015 at 0:13 | history | edited | RoboKaren | CC BY-SA 3.0 |
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| Aug 23, 2015 at 15:59 | history | edited | RoboKaren | CC BY-SA 3.0 |
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| Aug 23, 2015 at 14:58 | history | answered | RoboKaren | CC BY-SA 3.0 |