Originally Posted by Rob Rippe
In my talking to a local battery shop, the guy mentioned that my light output strength
would very with the batteries voltage rating, more voltage = brighter.
IE: 24v would be brighter then 12v, 16v, 18v.
Can anyone confirm?
No, the Zylight Z-90 gives constant output down to it's minimum voltage rating, although I forget exactly what it is, 7.5 volts or so. As long as you stay above the minimum voltage the light output is constant.
You'll get constant light output over its wide operating range of voltages. It's a regulated output.