The mounting location of your lights is the single biggest factor in how far ahead you can see while riding at night. Depending on where you ride and how fast you ride, board mounted lights might not be enough to see and react to oncoming terrain and you'll need a helmet light to see further ahead.
Mounting headlights on your electric skateboard looks awesome and shines light on the road ahead to illuminate cracks and oncoming terrain. The low mounting location casts light directly in front of your board and up to 25 feet ahead depending on how bright your lights are. Here is a comparison showing 2 x SL-300 headlights compared to 2 x SL-1000 headlights.
Board mounted lights also increase your visibility to drivers and other pedestrians. The low mounting location can be see very well from far distances. Here is what board mounted lights look like from 500 feet away.
The higher mounting position of the helmet light utilizes the full brightness better than board mounted lights. Here is the SL-300 helmet light compared to the SL-1000 helmet light.