Lego Lights

Flashlight Modding and DIY Parts
1

Since I had numerous extra parts from the lighted switch mods I’ve been doing lately, I decided to make some Lego lights for my son. I chose green and blue since they are the most efficient. They both pull around 0.2 milliamps, so for 1,900 mAh laptop batteries, they should last over a year.


In case you’re wondering about the wires, they are just taped to the batteries and bent to fit in the buildings. The battery for the green (left building) is on the top floor and the wires run thru a staircase and the LED lights up the middle floor. Whereas with the blue (right building), everything is on top floor.

And before you get too concerned:

  • My son is 15 years old and knows the dangers of lithium ion batteries – from discussion we’ve had, but mostly from him watching videos
  • All parts of the Lego buildings are plastic
  • I monitored the lights for several days before installing them

The buildings look pretty cool in the middle of the night, even better than what the pictures show. And most importantly, my son thinks they look pretty cool too!

2

I get that your son knows the dangers, but I still feel like tossing bare cells with exposed wiring and no LVP around isn’t super recommended - I’d spend the extra dollar or two on a driver and use some nimh cells.

3

I should also add that the buildings are just for display ever since they were assembled several years ago. They are not played with. They are also up high on a dresser, and there’s nothing in the house, like cats, that could potentially get at them.

But if it’s the consensus of the forum that this is still considered dangerous, I will remove them or use NiMH batteries instead.