Battery Panasonic or OEM KIA

The OE Panasonic battery in my WRX died roughly 12 minutes after I bought the car. It was the original, so it was 9ish years old. Impressive.

My MY2007 S2000 also came with Panasonic battery. I replaced it with Walmart battery in last summer (2015), So it ran for 8 years.

Original factory Panasonic battery in my RX-8 lasted 7 years. The 'premium' Exide I replaced it with is on it's way out now after only 4 years.

When I bought my 2006 4Runner V8 three weeks ago, it had the original Panasonic battery on it's last leg and I had it replaced with a Toyota True Start battery. The 4Runner only had 109,600 miles when we had that battery replaced.