first post here, not really a car expert. I just bought a 2008 scion tc base manual trans to replace my old 2002 Toyota camry le manual trans inline 4 cyclinder. the engines appear to be almost identical if not the same, I think they even have the same horsepower and torque output. Anyways, the battery in the TC is old and needs to be replaced, tested at 29% but the camry battery was tested at 100%. My question is, are the batteries interchangeable? if they are it would save me some money that the battery would run me. Thanks in advance.