This is the charge coil I use in my 460 along with a 4 magnet flywheel. It will be the same as the 625's charging system. An 18-20 amp charging system. I used a Kohler 25 amp rectifier. I run 2 hi/lo quartz halogen headlights - all led stop tail and turn lights - a wiper motor and a fan. No problems.
https://www.aliexpress.com/item/Gaso...ceBeautifyAB=0