The voltage readings had nothing to do with your battery dying. I think there's a huge draw on these Broncos (even while parked in your driveway). My battery will be dead after 10 days of not driving it regardless of the condition.November 21 Bronco went into service, 2.7 engine
Like many on this site I have been receiving Ford Pass notices of Battery Saver Mode etc. This has been going on for many months and I never had trouble starting. Some months ago I noticed that my dashboard Voltage reading was always up in the mid 14. something to 15. something even after all day driving. For those past months I just drove or re-charged with a charger but did NOT keep on a maintainer.
We were going to be gone about 20 days so I fully charged battery before leaving. Returned and on the 22nd day I went out and could not unlock the Bronco with the FOB. Nothing worked...completely dead.
Ford replaced my battery under warranty yesterday. Fully charged the battery and drove around today. From start up until I got home the on dash Volt reading was 13.2 to 13.9. So I am thinking that my continual high voltage reading of past months was a warning that the battery could not be fully charged even after being on a charger and being driven. I will watch my voltage as the new battery ages and I will get a new modern battery maintainer to keep on the battery if not being drive everyday.
Pretty damn underwhelming for a vehicle you need to rely on for transportation.
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