What's the 2010 Chevy HHR battery group size?

The 2010 Chevy HHR uses a group size 90 (T5) battery. This style battery is 9.50 inches long X6.90 inches wide X6.90 inches long and weigh a little over 30 pounds. They have top post terminals with the positive terminal on the right-hand side. The HHR battery is in the rear cargo area next to the spare tire. Open liftgate pull up the carpet and floor panel up to expose the spare tire and battery. If You are replacing the battery disconnect the negative battery terminal first period. This disconnects the battery from the frame of the car. If You were disconnected positive terminal first and accidentally touch it something metal on the car, You could cause a short somewhere in the electrical system.