Battery help?
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Senior User
Joined: Aug 2010
Posts: 202
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From: FLORIDA
How low or how long do you all let your batteries go? right now my my vlts are about 13.5-13.7 when running,but at first start for about 15-20 secs i have seen 12-12.2 once seen a 11.9. I'm just doing some preventive maintenance i don't what my FICM to go out on me. Thanks fellas
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
How low or how long do you all let your batteries go? right now my my vlts are about 13.5-13.7 when running,but at first start for about 15-20 secs i have seen 12-12.2 once seen a 11.9. I'm just doing some preventive maintenance i don't what my FICM to go out on me. Thanks fellas
More Turbo
Joined: Aug 2006
Posts: 548
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If you not looking to spend a ton of money the Motorcraft batteries seem to hold up fairly well for the money and have a decent warranty. Besides the OEM 750 CCA they are also available in 850 CCA and 900 CCA. The 900 CCA used to have a 4 year replacement warranty, but I am not sure if that is still the case...
If your willing to spend a little more and want something really good, look at the Diehard Platinum P-2 battery which is made for them by Odyssey. 930 CCA. 4 year replacement / 100 month pro-rated. They run about $175 each and are well worth it...
If your willing to spend a little more and want something really good, look at the Diehard Platinum P-2 battery which is made for them by Odyssey. 930 CCA. 4 year replacement / 100 month pro-rated. They run about $175 each and are well worth it...
-mike
-mike
Fleet Owner
Joined: Nov 2003
Posts: 27,916
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Funny that you would recommend the OEM battery because I can not think of a worse battery. I have consistently had the OEM batteries fail very early in life. It seems that the OE Ford batteries last about as long as as a set of cheap tires. Current sent was, according to the dealer "weak, but not weak enough to trip the warranty threshold" for replacement. Perfect...
-mike
-mike
-mike
-mike
Senior User
Joined: Feb 2006
Posts: 110
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From: Washington DC
No comment on the brand of battery but I have done some research on battery tech and how to properly care for your battery. I think a second heat shield on the passenger side battery would greatly extend the life of both batteries. The info I found is here.
https://www.ford-trucks.com/forums/9...t-came-on.html
https://www.ford-trucks.com/forums/9...t-came-on.html
Hotshot
Joined: Dec 2003
Posts: 15,369
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From: Stuttgart, Ar
Very very interesting thread about the battery temps. My passenger side battery always goes "first" and I have no insulator on it anymore. I bet it does soon though. Probably a good old walmart special flipped upside down and holes cut in the bottom--LMAO. Anything against the turbo tube heat.
Senior User
Joined: Feb 2006
Posts: 110
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From: Washington DC
I thought it was useful info, my passenger side battery internal temp is 105 F when engine is at operating temp. That cuts battery life by 50% and increases capacity by 20% this all makes sense and you can see it for yourself if you load test your battery when hot and then cold. The hot load test will tell you the cranking amp that the battery is rated for and also the actual cranking amps when tested. My battery is 850 cca but measured about 1040 cranking amps at 105 F. I am no math wizard but seems about 20% increase in capacity.
Therefore if that number goes up, the battery life has to go down.
Pretty cool stuff
Therefore if that number goes up, the battery life has to go down.
Pretty cool stuff
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