The 2007 Ford Expedition Owner Guide shows :
For the battery :
BXT-65-650 or BXT-65-750 ( if equipped )
So that's BCI group size 65 ( 650 or 750 cold cranking amps )
It came from the factory with a ( 650 ) cold cranking amp battery , according to the Owner Guide
According to the 2000 Ford Expedition Owner Guide : Both the 4.6 and the 5.4 came with the ( Motorcraft BXT-65-650 battery ) * that's BCI group size 65 , 650 cold cranking amps
Group Size 65 - minimum 650 Cold Cranking Amps (CCA)
If you live in a cold climate the more the better.
650 cold cranking amps ( both the 4.0 liter V6 and the 4.6 liter V8 came from the factory with the Motorcraft BXT-65-650 battery )
cranking amps or cold cranking amps Group refers to its physical dimensions.
910 cranking amps 700 cold cranking amps
There is no better, but 800 is more cranking power that 650.
910 cranking amps 700 cold cranking amps
look for information sticker on battery where the c.c.a. {cold cranking amps} will be listed.
Nothing at all. Increasing the cranking amps will not harm anything. The starter will only draw the amps it needs.
The BXL-65 has 675 cranking amps at 0 degrees and 840 cranking amps above 32 degrees.