UPDATE: i just got my wifes car back from the dealership and it turns out it was the battery for hers. The voltage thats normal for her car is 14.8 volts not 13.4. He said there are 40+ computers and when the voltage is low it causes havoc in the car.
You can get an Deka AUX18L from batterymart.com for $159 shipped to your door. Deka is the OE manufacturer of the BMW battery for the i3. My original battery lasted 7 years, it’s a no-brainer.
When I bought my used bolt from Carvana. I had scheduled a full review at the local Chevy service center/dealership. They confirmed the battery had been recently replaced, other than that perfect condition.
I use Deka sealed batteries so less offgassing messing up terminals.
Chevy Volt. It was a true gateway drug to the world of EVs and showed me that I can do most of my driving solely on battery so I didn't need to worry about range anxiety.
I only use deka on my service rig. Usa made quality. Though listed at 540 CCA, MY Midtronics tester shows they output 650 - 750 CCA.. I easily get 7 years use in the field with these.
Deka batteries. I’ve turned wrenches for twenty years and they’re the only ones that still consistently test far above their rated capacity when new. I have one that’s 7 years old and just installed one in my other rig last year.
Look at a Chevy Volt. Small battery, great for daily drives and gas engine. Hyper reliable. 130k miles with nothing major to note. Cheap repairs because it shares 90% of parts with other models.
I drove a first gen Chevy Volt before I bought my 2022 MYP. I actually loved the Volt but it didn't have much range. The Chevy Volt had about 37 miles of range and my round trip to work and back was 34 miles. I drove that car on all electric 95% of the time.
Never left me stranded besides a dead battery.
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If choosing battery across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare battery across these categories:
In March 2026 on PartReview, battery Deka were overall better than OEM Chevrolet.
In March 2026 on PartReview, battery Deka were overall more popular than OEM Chevrolet.
By vote balance, battery Deka surpassed OEM Chevrolet:
By number of reviews, battery Deka surpassed OEM Chevrolet:
In March 2026, according to PartReview, battery OEM Chevrolet led more car-specific ratings than Deka:
OEM Chevrolet are chosen by owners of cars such as: Chevrolet Volt, and others.
Battery Deka have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of battery OEM Chevrolet with: OPTIMA, Varta, Bosch, OEM Subaru, OEM Volkswagen, YUASA, Tesla, Duralast, Exide, OEM BMW.
Also available: comparisons of battery Deka with: OPTIMA, Varta, Bosch, OEM Subaru, OEM Volkswagen, YUASA, Tesla, Duralast, Exide, OEM BMW.
You can also see who is better among other battery manufacturers: OPTIMA or Varta, OPTIMA or Bosch, OPTIMA or OEM Subaru, OPTIMA or OEM Volkswagen, OPTIMA or YUASA.
