800 to 900 is plenty even in colder weather.
The cold cranking amps that are required to start your Ford 2.5 liter engine is dependent upon the outside temperature. 450 cranking amps are required at a temperature of 32 degrees.
If you live in a cold climate the more the better.
I would recommend 500 minimum.
look for information sticker on battery where the c.c.a. {cold cranking amps} will be listed.
try checking your battery usually it is the lack of cold cranking amps
910 cranking amps 700 cold cranking amps
cranking amps or cold cranking amps Group refers to its physical dimensions.
Group 34, about 600 cold cranking amps.Group 34, about 600 cold cranking amps.
"Cranking Amps" are the amount of amps required for the starter to crank the engine. Automobile batteries are measured in "cold cranking amps." That's the amperage capacity of the battery in cold weather.
cold cranking amps
910 cranking amps 700 cold cranking amps
The specification calls for 650 cold cranking amps (CCA) - but with batteries: more is better.