Detected A Battery Loss Issue: A Potential Problem?

Rivian Blue · 2025-04-01T08:59:34+00:00

Ever since I got my R1S, I've noticed that the battery range estimation hasn't been the best. Driving a Tesla for the last 3 years, it never had this kind of issue. During my last trip, the driver display shows 255mi remaining. My total trip (including 2 destinations) is 160mi so I believed I should be able to make it easily with a nice cushion. But the center display showed that I would arrive at first destination with 4mi remaining, and run out before the second destination! I knew this was false so I made the drive anyway, and arrived at second destination with 50mi remaining. If I understand correctly, the driver display range is simply the total rated range multiplied by SOC. That makes sense here, since my vehicle is rated for 370mi, 255mi is 68.9%. Coming from Tesla, I expect the number shown in the center display should account for factors like elevation, wind, traffic speed, etc. It's sad that my own mental estimation is better than Rivian's.

Rivian Mom

Active Wheeler

Nov 18, 2024

#1

I’ve been using Home Assistant (HA) along with the “Rivian (Unofficial)” plug-in and can track a lot of info.

This is the first time I’ve noticed (or paid attention to) this strong correlation between sleep mode and non-sleep and battery use.

One can clearly see the high battery loss when the vehicle drops out of sleep mode (each time it does, it’s for just over an hour). But during sleep mode, vampire drain is super low.

It could be that the API is “lying” and it’s more of a slope, but during the wake period we can see several measurements and they are pretty consistent.

Anyhow, food for thought.

You must log in or register to reply here.