It is possible to hook up 2 LED Headlghts , in parallel I think, but they have gotten bright enough to not really make that necessary.

I have 2 Halogen E6 Schmidt headlights they were made to be run in series the one has an on and pass thru wired switch , the other on & off

never was descending in the dark fast enough to need both.. LEDs tend not to be warm like halogen bulbs, but blue-white


the top of the range offers a USB plug to re charge the phone when the light is off.