I remembered that I had an old remote controlled truck that runs off of a 7.2V battery pack. The LED replacement bulb is good up to 9V and I'd have to imagine that there is some type of voltage regulator in the circuit because it runs fine at 7.2V .

It's been running for two hours so far on a partially charged pack. It'll be interesting to see how long they'll go.




It might not be the brightest light but I like the pattern. All in all I think they'll work fine. Maybe I'll supplement then with a set of flashing lights.