I purchased a Bosch car battery with a 36 month free replacement in 01/2009. When I purchaed the battery at the PEPBOYS in Salem, NH, they did a Prostart Complete starting system test and said it was all was OK.
After a short period of time after I purchased the battery the car would not start if unused for 2 weeks or longer. I would have to use a battery charger to charage the battery each time I used the car if it sat for longer than 2 weeks. This got to be annoying so In 10/2011 (withing the 3 yr replacement) I brought the car to PEPBOYS for a new battery. I was told the problem was not the battery, and it was common that a vehicle would not start after sittiling idle for 2 weeks.
I was charged $16.18 for a "Prostart Starting/Charging system test) that did not show any problem with the car's charging system. They said the problem was not the battery and they would not replace it. I never had this problem before I got the Bosch battery and now it looses its charge and will not start if the car sits longer than two weeks. I was basically called a LIAR by the service representative.
I have never experienced a case in my 50 years of owning a vehicle that a vehicle with a "good" battery would not start if sitting for 2 weeks. I have left vehicles for months that would start when needed. Prior to the new Bosch battery the vehicle always started, even if left for extended period of time.
I know the vehicle and I know its the battery and not the vehicle. Roger Duhamel, Salem, NH.