Candle with LED lights – no Battery

This one kept me going for 24 hours.. We were at a friend’s for dinner and she lit the candle at which point the LEDS lit up and stayed lit up all the time the candle was on (several hours). I was convinced there had to be a trick like a battery – but no – looks like no battery – no hole in the bottom.

The candle comes surrounded by gel within which are the copper-wire LEDs. They glow brightly. It seems the trick is some kind of bimetal strip, generating electricity from temperature difference between the candle and the edge of the glass. There’s no reason why this should not continue to work for years. And that’s it for Christmas day – nothing else exciting.

Update: I got it wrong – and thanks to reader Michael Mauch for the correction. It seems the device DOES use a non-replaceable CR203 battery (Michael’s M&S link). I’m disappointed.