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Discussion Starter · #1 ·
I was told by O’Reilly that the dealer needed to replace the battery on my F250. That sounded crazy to me has anyone else heard this? What would happen if I replace it myself?
 

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Phoenix, AZ 85008
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Welcome to the FFO!

What engine is in your F 150?
Did you buy the F 150 brand new?

Is the battery a lead acid battery?
AGM or some other design?

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Thanks for a description of the sub-model, cab design and bed length.

What engine is in the truck?
What battery design?
Have you owned since new?

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As near as I can tell the battery is a lead acid battery.
And group 65 is the size needed.

Replacement of that type of battery doesn't require any special handling. (It will be heavy)
You are a subsequent owner so there is no warranty.

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I would think so.
Shut down all power before disconnecting.

Connect neg terminal last

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AGM is just easier to handle (and more expensive) than a lead acid battery.
AGM has some electrical advantages as well.

However, the installation is no different than an old school lead acid battery.

Ford has some water-cooled batteries. These batteries would need to be installed by the dealership. And they may only be on hybrid or electric vehicles.

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Discussion Starter · #15 ·
AGM is just easier to handle (and more expensive) than a lead acid battery.
AGM has some electrical advantages as well.

However, the installation is no different than an old school lead acid battery.

Ford has some water-cooled batteries. These batteries would need to be installed by the dealership. And they may only be on hybrid or electric vehicles.

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so the FoMoCo
ML BXT-65-750 looks like a lead battery should be safe
 

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The BXT 65 is battery size and kind of a part number
The 750 is amps. (and there are a lot of ways to measure amps) But the bigger this number the more power.
Diesels generally need more power to operate the starter, versus a gas engine.
I think 750 amps is good enough. The replacement battery should be listed in the owner's manual.

Lead acid versus AGM is the internal construction of the battery and how it generates power.

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Some vehicles will lose certain memory functions in the computer when the battery is removed for any length of time. An auxiliary power supply is sometimes inserted to provide memory function while the battery is removed. That used to be a method to turn off engine trouble lights if you didn't have a scanner... I don't think there is an issue with changing it yourself. Maybe the auto store person didn't feel like doing the free installation...
 

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Sounds like a lazy O'Reillys employee.

They USED to install replacement batteries AT THE STORE when purchased new???

Diesels usually have batteries replaced in PAIRS too. :unsure:

Also, bump up to the 65-850 for a diesel engine truck. There is only about a $1.00 difference in price, IF THAT.

Good luck,
Jon in TX.
 
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