Cool white LED flash light bulbs link

[Stormin Mormon]

Thanks to Steve Spence for the URL, these are said to be "cool white". Should combine a lower current draw, and good light. I havn't bought any, but Steve says he and others are very pleased.

[Ashton Crusher]

So if these are 1 - 9 volt bulbs does that mean they will put out the

100 lumens regardless of what the actual voltage is that's supplied to them? How would that work?

[Stormin Mormon]

In theory, the bulbs have some kind of circuit, that allows more or less current, depending on the applied voltage. How that works? I'm not sure.

Garrity had bulbs that worked on a range of voltages, but they put out blue light.

Christopher A. Young Learn more about Jesus

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So if these are 1 - 9 volt bulbs does that mean they will put out the

100 lumens regardless of what the actual voltage is that's supplied to them? How would that work?