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Can I convert mains fairy lights to battery powered lights?

I want to make a fancy dress costume lit with some old mains fairy lights (that I have lots of) can I do this? Do I just cut off the plug and fix to a battery. Or will there be too many lights, too dim to see?

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Its not so much the power, as the voltage - go for Lemonie's LED idea, safer and more practical.
I second that. No way would I make a costume and attach lights that were plugged into the main power. Even if you build safely how do you know that someone won't spill a drink on you in the wrong place. With it a part of your costume you couldn't get away from it. Better to use low volts and parallel leds.
Pippa is asking about hooking them to batteries, re-design, not connecting to an AC source. There is nothing unsafe about her idea. It's just energy inefficient.

"Do I just cut off the plug and fix to a battery. Or will there be too many lights, too dim to see?"
My mistake. I didn't read the question carefully enough. Yes a battery would be perfectly safe.
lemonie7 years ago
These take a fair bit of power, you'd have to rewire them and use a big battery. Starting again with LEDs might be better. L