Wow, already? just replaced the original Panasonic battery in my wife's '03 4Runner with over 200k miles. i just got the TrueStart from the dealer (no, it is not same as factory, pretty sure you can't buy a new Panasonic battery). i just checked my '10 4Runner and it has a Panasonic. really surprised you are replacing already. i will say this, we tested her Panasonic battery several years ago at AutoZone and it tested "bad". it never let us down, my wife asked me to replace it as it was just starting to start the vehicle slowly. she didn't like the "just call AAA" response.