performance, battery, mileage

[skeltons05]

Can low/weak/bad batteries cause performance and mileage issues. Just asking out of curiosity.

[layson]

Typically if the batteries are bad, it won't even start or just barely. I would guess it may slightly effect performance, but I doubt you would notice it. Most likely it just wouldn't like to start...

[JSchuricht]

Low batteries will cause the alternator to work harder resulting on more load on the engine. You'll have a hard time measuring the difference, and you won't be able to feel it.

[tonypagnano]

the battery is really only for starting and grounding, the alternator takes over everything once the truck is running

[thecaptin]

should be good to go if you can start it. other than possibly leaving you stranded when you need it most cause it wont start.