What battery do I need?

I'm trying to get my mom a battery for her car for mothers day. she's been ubering to work everyday and she really needs one. Only problem is I dont know the year of her car. Its a toyota 4 runner. Does the year matter for what kind of battery it is? I know its a little older. Its a dark green color with copper trim, which is kind of an older car style. I wanna say its 2004 but Im not sure. Help. What battery do I get. I know nothing about cars :'(
What battery do I need?
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