Battery Duracell or OEM BMW

I've had good results from East Penn Duracell at Sam's Club. I just replaced one nearly 8 years old.

The best way to check is to go with a multimeter and get the highest voltage/closest manufactured date. Duracell might just be EverStart rebranded BUT NO the Walmart battery will last around 1-2 years, maybe less. If you want to make sure your covered with a good battery, that’s when you go to Advance Auto or AutoZone and get the battery with 3 years of warranty and swap it out right before the 3rd year ends and I find the batteries last me forever.

I took a drive in my i4 a couple of weeks ago that estimated I'd get home with 4% battery. Guess what I rolled into the garage with..... 4% battery. These modern systems are pretty damn accurate.

The best lead acid type of battery is a Duracell/East Penn hybrid/house AGM deep cell. These have thicker plates and are typically used for RVs and boats. They can tolerate deeper discharge and are less susceptible to damage (AGM). They sacrifice a little instantaneous current output, but that's not needed on an EV.

We’ve always had luck with Duracell in our cars.

I just replaced both batteries in my 2018 740iX. Was original battery (build date was Aug 2017) so actually lasted 8 years which was surprising given other problems I had with the car!

BMW 3 series in the right rear panel. The location is ok, but the box is just enough to slip in a group 49, and there is an air vent hose on the forward side, and a clamp on the rear bottom that is impossible to reach with anything but little elf hands. Then there's also the starter cable, battery management and regular wires running in the same area, all hopelessly in the way..

Not going to say yes or no,but get a battery check before buying it ???? Bmw warranty covers the battery up 6year or 100.000km,so no more battery warranty.. It has 6 modules to replace(not 1 battery) and last time i checked it was around 1000 per piece without labour. My 2020 330e with 98000km had this check and it was at 84% state of health,so this one might not be looking so great.. but get it checked anyway

FWIW…. I’ve had 3 Duracell batteries and all have died within 3 years of manufacture date, and they have a 2yr warranty.

The battery lasted about two years. I had a company car at the time and only drove the BMW on my days off, and didn't drive long or far. The short, infrequent drives basically never allowed the battery to completely charge, resulting in it's early death.