I was greeted to an unpleasant surprise of a dead battery after work today. I was surprised since the battery was only 2.5 years old. The battery was the factory one and wouldn't hold a charge anymore. I didn't get any indications of a problem. The car just wouldn't turn over. I can't believe Toyota is putting in these wimpy 310 CCA batteries into new cars. Just a heads up to everyone before the cold weather hits.