Battery Troubles
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Freshman User
Joined: Nov 2011
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Battery Troubles
OK, have a F350 duelly with a 7.3. I am new to the two battery thing. Everything was fine when we were driving it 3 times a week or more. For about a month, she sat in the garage. I noticed after that, it was not turning over as good as it used to, but I drove it over a 45 minute drive, no stops inbetween.
Tried to start it yesterday, it rolled over, weaker and weaker till it died completely. Tried jumping it off (passenger side battery), no luck not even a roll over. Pulled that battery out, charged it for 2hrs, 12v/6amp battery charger. no rollover, even with a jumper vehicle being used. I bought the truck used, no idea how old the battery is.
Do I buy a new on for the passenger side?
What is up with the driver side battery, all encased in plastic and so forth.
THanks
Tried to start it yesterday, it rolled over, weaker and weaker till it died completely. Tried jumping it off (passenger side battery), no luck not even a roll over. Pulled that battery out, charged it for 2hrs, 12v/6amp battery charger. no rollover, even with a jumper vehicle being used. I bought the truck used, no idea how old the battery is.
Do I buy a new on for the passenger side?
What is up with the driver side battery, all encased in plastic and so forth.
THanks
Senior User
Joined: Apr 2012
Posts: 341
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From: Texas
There should be a sticker on the battery with the date of purchase. From personal experience with my old '89 7.3, replace both batteries at the same time. It won't take long for 1 weak battery to pull both down. If you still have problems after changing batteries, check your starter.
i ain't rite
Joined: Mar 2005
Posts: 65,568
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From: Marlboro Mental Hospital.
yes, both batteries are the same. if memory serves correct, they are group 65. you want the largest cold cranking amp batteries you can get, with the minimum CCA rating of 650 cca, preferably you want at least a 750 or 800 CCA battery though.
i use 880 CCA batteries in all my trucks. the next time i need batteries i am going to invest in a set of 1000 CCA mack truck batteries like my dump truck has.
i use 880 CCA batteries in all my trucks. the next time i need batteries i am going to invest in a set of 1000 CCA mack truck batteries like my dump truck has.
i ain't rite
Joined: Mar 2005
Posts: 65,568
Likes: 5,603
From: Marlboro Mental Hospital.
i have had batteries last 7 years, and on the same token only 9 months. it really depends on the power load, and whether the batch of batteries from the manufacturer were any good or not
Senior User
Joined: Apr 2012
Posts: 341
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From: Texas
Sounds like they may be fairly new. But, first things first. Test the batteries and make sure that is the problem before you start throwing money at it. If it tests OK, then start checking cables and the starter.
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cables look ok, it have been a progressive weaking of the battery after I quit driving a few times a week. It sat the first time for 3 weeks not being moved or started.
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Steve
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Ok, update.....not batteries, but new batteries did allow for the starter to at least try to turn over. So now I have a bad starter also. Oh well, used is used, gotta learn...sometimes the hard way.
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Steve
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From: Bristol, TN.
Often folks then change out a part and assume it was the new part when all they did during the installation of a new part is create a better connection. Not saying it is not the starter, just saying at this point you do not know. I would measure the amp draw of the starter as if it truly is stuck or dead, I would expect to see a very high draw.
Steve
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Joined: Jul 2004
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From: Nevada,
I would measure the amp draw of the starter as if it truly is stuck or dead, I would expect to see a very high draw.
Steve[/quote]
Good advice Steve, What would the correct AMP draw bw for this vehicle (approximately)?
Steve[/quote]
Good advice Steve, What would the correct AMP draw bw for this vehicle (approximately)?