My logging of IBS data using MES in my Quadrifoglio on the move was always done with the battery charge no higher than 75%. So my conclusion that the Quadrifoglio's battery voltage doesn't vary when the brakes are applied might be wrong.
When I have time I'll put my battery on charge and try to get it above 85% and do some more logging.
It remains a mystery to me why my battery hasn't had a charge higher than 82% reported by MES at any time in the last few months even right after I'd driven 3,000 miles in about a fortnight. Perhaps it is defective or was damaged when it was completely flattened a year ago.
Last week I chose to put my Quadrifoglioís battery on charge using my CTEK MKS 3.8.
Whilst Iím aware of the owner manualís instruction where to connect a charger, I chose to connect it to the jump start points in the engine bay. I believe that connection respects the importance of connecting the charger in a manner which ensures the charge current is sensed by the IBS. Iím reasonably sure the negative terminal in the engine compartment is a direct connection to chassis hence my charging current passed through the IBS shunt attached to the battery -ve terminal.
That belief is born out by the fact that on Friday morning after about 45 hours charging, the CTEK had reached state 6 (Float or Fully Charged) and the State of Charge as logged by MES had risen from 79% to 87% . I would have hoped to get SoC nearer to 100%. The failure to do so might suggest that the battery was damaged by its total discharge experienced about a year ago or that the IBSí assessment of SoC is inaccurate.
On Friday afternoon, I drove the car for about 4 hours. On Saturday, it was left idle. On Sunday, it was driven for about an hour. I disabled STOP/START on each drive.
Yesterday straight after first starting the car, MES logged the SoC as 89%.
On completion of a 3 hour drive that day, MES still logged the SoC as 89%.
During a drive of about 12 minutes MES logged SoC as 89% throughout and battery voltage as about 13.4V for about 90% of the time. The battery voltage rose to between 14.6 and 14.8V for short periods.
I believe I can safely conclude my Quadrifoglio does have Ďpseudo regenerativeí braking. My dealer was supposed to update all ECUs software at the early December service, I canít be certain he did so. As soon as I can, Iíll get NJS to check if my car has the latest software.
I will be monitoring SoC over coming weeks to see if my battery charge stays in the high eighties.
The situation is far less clear when I examine the Battery Current logged by MES whilst driving.
During the early part of the 12 minute drive, the battery current was logged by MES as varying frequently between about 1A and 8A charge with rare excursions to 6A discharge. The logged charging current would change from 1A to 8A and back to 1A in a little as one second. Also MES reported the battery charge current was lower when the voltage was about 14.8V than it was when about 13.4V.
I canít believe that my interpretation of this MES data is a true reflection of actual battery current. Iíll be posting my findings in more detail on the MultiECUScan forum soon, hoping someone there is better informed than I.
I have posted more detailed text on MultiECUScan forum, but I was unable to add an attachment so I've put it here.