Battery Panasonic or OEM Mazda

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.

I Have had the Mazda CX60 Azumi Tukami G40 Turbo 6cl petrol engine for 12 months now and have had this back at the dealership several times. I believe I have the lemon of the bunch.

Continual Istop issues, it has needed reprogramming twice. The battery has failed testing and needed replacing.

the stock battery only lasted 3 years. My VW prior lasted 7 on the OEM battery.

Battery died less than 12000 miles. Apparently Mazda is using cheap batteries, as this seems to be a common issue. But I still see others complain about the same thing.

first issue I had was the battery at around 2000 miles, it was replaced under warranty.

So far have not had any issues except for dud OEM battery, kriginal and warranty...