Ive always wanted to add a battery charging system to my 03 merc 25. it doesnt have a starter, its just your typical, short shaft, 2 stroke, 25hp merc. man tilt, man start. i could care less bout pull starting it. im curious if this is the only thing i need to charge battery? any idea if the "kit" is missing something? http://www.crowleymarine.com/mercury_parts/11744/116.cfm any other options? i dont mind payin the $70 for a chrging kit.