Solar-Powered Navigation Lights?

ok I'll reply. the problem you will have is that they won't be bright enough to be legal. Someone correct me if I am wrong but nav lights need to be visable in darkness from a distance of I think 3 miles. The LED lights on solar lights can barely be seen from 100 yards away, they just don't have the power. Not only that but you need to be able to swap out the battery in case of a failure, which they are known for, or else you will be stuck with no lights.
A set of nav lights and a small battery to run them for a few days before charging will set you back less then $100. If you look at any of the good bright solar lights, which still aren't really bright enough, they will run alot more then that. And then you have to go through the expense of making them salt water resistant. If you are dead set on solar power just get a solar panel battery tender to help charge the battery. Or if you need a cheap light weight option get the portable battery powered nave lights that run on D batteries and buy rechargables.
At the end if you do try to make a business out of it I think you will be hard pressed to get coastguard approval on them and end up spending alot more then you would ever make.

 

Well if you get a lawnmower battery and buy the LED nav lights then they will glow for a long time and be really light. cheers.

 

a lawnmower battery is good for small devices that dont run a long time or take a bunch of juice. bilge, lights, gps, depthfinders. if i dont use my trolling motor or livewell i will usually just use a small battery. however, it is a wheelchair battery. its the same size as a lawnmower battery, but its a deep cycle. if theres a chance ill need the livewell or TM, i hook up the second battery in parellel. together they last about 3 days to power the livewell consistantly and the bilge often.