I grid charge it every 1-2 weeks to avoid the IMA light and discharge every month or so (96v) my battery is about as dead as dead gets. Even with a good charge/discharge cycle the battery still drops out at 90% capacity.You're probably due for a discharge. Frequent charging necessitates discharging due to capacity loss from over charging. Restore capacity with a discharge.I've been grid charging it every 1-2 weeks for the past 6 months. It's far from ideal but I've always had autostop until recently... Like I said, it started randomly restarting at stop lights like something was malfunctioning.
Since the health of your battery is in question, I wouldn't do an ultra-deep discharge. Simply discharge to 96V and re-charge for 24 hours.