I have an outboard with electric start also and it had an alternator for charging. The major difference is Northbeach doesn't have a charging system on his outboard and I ran mine 2 minutes to the bay before the sails went up. The solar panel solved the problem without being hooked up to power and take it off the boat in the winter and connect it to the battery for full winter charge.
Rehoboth Bay/Indian River, DE
S/Y KJ, Helms 25