If you get the x-tra long shaft (25") it comes with a rectifier for charging for an extra 100 bucks. I have been looking around for a spare as I have a Honda 9.9
4 stroke that has charging capability, but weighs a ton.
I have to switch over when I use my "shoal" draft boat for low tides here. It is a hard decked cat (Combo Cat - sail + outboard) that draws about 14" and gets going pretty quick.