Battery Panasonic or OEM BMW

Panasonic Eneloops for me all the way. Bit of an initial investment, but they work so well they're all I buy now for anything that needs batteries. They even kept my Pix running for almost 10 days!

We had a 2016 lexus with original Panasonic battery. in 2022 had to be replaced, thats 6years. In Arizona batteries last about 2 years. so that was nice.

For about a month I have owned a 2016 REx whose 60 Ah battery is supposed to get 72 miles. This week I fully charged it and have been commuting four four days without topping up. Today the REx kicked in with the trip meter at 73.3 miles. This was a mixture of city traffic jams and short bursts on the carriageway, mostly with the air con on and mostly in Comfort mode. So I'm pretty pleased.

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.

I am still on my original battery in my 2007 335i w/ 87k miles.

I tried my spare key, and the first time I used it, I got a weak battery warning. I never had that warning on the key I regularly use. I replaced both batteries, and still had the problem.

my bmw would say this, a year after having a new oem batt installed, and only in the winter, dealer couldn't find the problem, so I traded it in for another subaru because parasitic draws are the last thing you want in a german car