How often driving is not enough? I typically use the car 5 or 6 days a week
I also noticed it's only at like 12.4v when the car is off via the OBD2 detector and 14.5v when car is on although it shows SOH 100% at all times
Battery maintainer like a trickle charger? Are you plugging that into the pro power bed in the frunk? Got a solar one that plugs directly in to the OBD2 port for on the battery itself