1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 79Get this manual
CHARGINGSTARTING SYSTEM
Battery Charging System Electric Start Models
Description:
The battery charging system components are the stator lighting coils, rectifierregulator and batteryAlternating current (generated in charging coil) flows to the rectifierregulator, which changes the alternating current to regulated direct current for charging the battery