My F450 6.7 has the features disabled, drive to reconnect message every 10 days. It's been that way since new. Battery is 6-21 DOM. It load tests excellent and resting voltage being off the maintainer for 30 hours is 12.65v. Batteries don't leak and no cable corrosion. Should I be getting nervous about instant failure of the batteries? It lives on the maintainer 24/7 when not being driven. I'm eyeing Odyssey extreme G65s.