mine died after over 2 years 12,000 miles.
I bought it used and I was told that the battery had been replaced once already after a 2 year period. The batteries on these die quicker that's for sure.

 

Just got The mtp24f battery put in let me tell you the car feels like a brand-new car!

 

what feels different about it?

 

Car has regained lost power, just feels a lot more spirited

 

Once the engine is running the alternator takes over and runs the accessories, as well as recharging the depleted battery. But that doesn't take long. I suppose an old battery would take longer to recharge thus drawing more load from the alternator, which in turn could sap a tiny bit of power from the engine via the serpentine belt. You would have to be very perceptive to notice the difference though.

 

The battery I had was completely done for. Had to use a jump pack on it everyday for three weeks till I finally had time off work to get to the interstate store. I would say the car didn't "gain" power, but it was definately more responsive when I pulled out of the with the new battery

 

I just replaced the original in my 09, roughly over 3 years of service. It was still working but had a hard time starting after 20 minutes of radio on. I replaced it with a Deka 21 pound battery, shaved roughly 15 pounds off the front end.

 

Don't forget that a low-voltage battery can cause all sorts of issues in a car, so it's possible that he did lose power that was noticeable. My transmission stopped thumping into 1st gear when coming to a stop or when shifting from park when I put the bigger battery in.

 

We just brought in our 2008 coupe and I asked about the TSB for the battery....the dealer said I did have the older battery that had issues and replaced our battery for free!! Now it starts quickly again when it is cold. Oh and our warranty is expired!

 

i finally took my car to the dealership today and they're swapping out the old battery for a new one after it failed to start last night. said the battery died and heard that there was a service bulletin. he pulled up my info and began reading the notes and said "ok, you're getting a new battery." he said i had already got the new vent control valve.