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Have a 23' F350 7.3 gas truck that is on its second battery in a month. There is 9500 miles on the truck and build date of 5/23. The truck has OEM Ford battery BXT-65-750 lead acid and 30 days ago it was dead and only had 3 volts when connected to the truck. Dealer replaced battery with the same OEM BXT-65-750 and now 30 days later we are dead again with only 3 volts showing when connected. After the battery was replaced, I turned off the Ford data collection features in settings to try something new to preserve battery life.
Now to be transparent here, I have not driven the truck that much recently. Maybe a few times a week and total of 50-80 miles each week. My question is: is this to be expected when the truck has sat idle other than a few short trips to town and back each week? The first 15 months of ownership I never had the battery this depleted. There has been times when Ford Pass has shown me that some remote features have shut down to save battery power, but it always started.
Forums here have had similar postings about battery issues and some have said the Ford OEM batteries are of poor quality. What to do here is the question? I cant find any obvious parasitic draw with my limited diagnostic skills so far. Any help or advise is appreciated.
How close do you keep your key fob to the truck while parked? I heard if you keep the fob too close it can kill fob battery and maybe it would do the truck battery? Even on our new Porsche it was one of the first things the salesman told us. Just a thought
How close do you keep your key fob to the truck while parked? I heard if you keep the fob too close it can kill fob battery and maybe it would do the truck battery? Even on our new Porsche it was one of the first things the salesman told us. Just a thought
Keys and fob are stored inside the house and about 50 feet away.
and some have said the Ford OEM batteries are of poor quality. What to do here is the question?
My 2023 killed my battery one time... I recharged it, and it hasn't done it since. I have no idea why. I do have all my telemetry turned off, but that doesn't mean there isn't something running in the background... there is an awful lot of electronic crap on these trucks.
I would agree that the battery is crap. Mine leaked out of the vent caps... I had to neutralize it with baking soda, pull the battery to clean out the tray, and reset it. I also had to put a piece of rubber floor mat under the holddown to keep it from moving. I consider batteries to be like tires... reliability is key. If the truck kills the battery, again, I'll just replace it with a quality aftermarket one.
Did the dealer load test the battery? Did they try to charge it and found it bad?
My question is: is this to be expected when the truck has sat idle other than a few short trips to town and back each week?
Definitely not.
The BMS (Battery Management System) is pretty clever, and if it's all working properly will protect the battery from discharging to a level lower than what it would need to start up the truck again.
I.e. after if you leave the truck for while (~1 or 2 weeks?) without ever starting it, you will find that opening the door won't start-up the screen, nor turn on the lights any longer.
If you had such battery failures, I would suggest that there's something else going on, such as a parasitic drain outside of the monitoring scope of the BMS.
Have you installed any aftermarket stuff?
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I didn't like the installed battery, and replaced it with a Walmart AGM on my 24 XLT, but didn't actually have any issues with the Ford battery.
Definitely not.
The BMS (Battery Management System) is pretty clever, and if it's all working properly will protect the battery from discharging to a level lower than what it would need to start up the truck again.
I.e. after if you leave the truck for while (~1 or 2 weeks?) without ever starting it, you will find that opening the door won't start-up the screen, nor turn on the lights any longer.
If you had such battery failures, I would suggest that there's something else going on, such as a parasitic drain outside of the monitoring scope of the BMS.
Have you installed any aftermarket stuff?
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I didn't like the installed battery, and replaced it with a Walmart AGM on my 24 XLT, but didn't actually have any issues with the Ford battery.
Your F350's recurring battery issues may stem from parasitic draw, poor-quality OEM batteries, infrequent driving patterns, charging system malfunctions, or software glitches preventing modules from entering sleep mode. To resolve this, have the dealer perform a parasitic draw test, check the alternator and voltage regulator, and ensure all software is updated. Consider upgrading to a high-quality AGM battery, using a trickle charger during periods of infrequent use, and verifying that no aftermarket accessories are draining power. Escalate to Ford customer service if the dealer cannot address the problem effectively.
I would just for the fact AGM doesn't leak around the posts and eat away at your battery clamps.
Yea... this battery is already leaking from the caps, and when I threw a charger on it yesterday (so I could run ForScan without killing it...) there was already corrosion on the clamps.
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