Alan Brinkman via EV wrote:
For someone new to electric vehicles, and for a majority of conversions, a 12 volt accessory battery is the simple means to power accessories.
That's right. The KISS solution is a 12v accessory battery. Even Tesla is using a 12v lead-acid accessory battery.
Some motorized machines use 24 volts for the starter motor and lights, so you can find a few lights using 24 volts. And the communications or phone system used 48 volts I believe so there is some equipment around at that voltage.
Yes; either of these are reasonable alternative system voltages for low-power devices. If you're building a vehicle from scratch, it's worth considering them as an alternative.
For higher-powered stuff (the traction motor being a prime example), it's worth powering them directly from the pack voltage.
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