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The 2007 Toyota Sienna is equipped with a 24F battery that has a minimum of 710 cold cranking amps, which makes it easier to start the van's engine. There are two main battery types available: traditional lead acid batteries with a wet cell that requires occasional water adding, and newer AGM batteries that are sealed and contain a gel. Typically, AGM batteries offer higher cold cranking amps and a longer lifespan compared to standard wet cell batteries.
You can swap out the old battery in your 207 Toyota Sienna for a 35-AGM group size 35 650 CCA battery on your own without much difficulty by simply going to the auto parts store.