Originally Posted by
unterhausen
If it's not rated for battery power, I doubt there is a power supply in the light. Doesn't make sense since modern emitters can take more current than dynos can generate
There are at least two versions of the Philips light. The dynamo light and an AA battery powered light. I measured the battery light.
I think Philips are also planning to bring out other versions in the future e.g. for electric bikes which might work with a larger voltage range.