After reading through every thread I could find on the subject, and trying all suggestions, I am stumped. My 2010 1198 S Corse has a very sick charging system. It overcharges and boils batteries. I have replaced the rectifier/regulator 4 times. I just installed the fourth one (ElectroSport) and a new stator (also ElectroSport) as well as a brand new AGM battery. The last battery was a regular lead/acid type and it blew its caps and sent acid all down the side of the fairing, ruining the the beautiful Corse paint job. The system is still overcharging, causing the headlights and dash lights to go on and off and sometimes lighting the diags light. With a meter, I am seeing up to 16V at the battery and this is with the new battery, r/r and stator which don't even have 10 minutes of run time on them. The r/r hasn't even had a chance to get hot yet.