Testing My Rivian’s Battery at 35K Miles: Here’s What I Found

Rivian Blue

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Last weekend, I hit 40,000 miles on my Rivian and decided to test how much battery capacity it still has. I drained the battery to 0%, with just 1 mile of range left, then charged it all the way to 100%. I was shocked to see it only lost about 1 kWh since it was new. At 20,000 miles, the vehicle data showed 130 kWh of capacity. Now, it’s at 127.72 kWh.

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I won't lie, I was expecting a bigger drop at this mileage, but these results are way better than I hoped. Honestly, it’s impressive how well the battery’s holding up after all those miles. I did the test myself, and it was pretty easy to pull off. Starting with an almost dead battery and charging it fully gave me a solid read on its health.

I’m a bit excited and surprised that it only lost a tiny bit of capacity after 40,000 miles. I was worried I’d see a bigger decline, but this makes me feel good about the Rivian’s battery lasting for the long haul. If you’re wondering about your own Rivian’s battery, you should give this a try. It’s a quick way to check how it’s doing without any fancy tools.
 

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