Recent content by kxev

Has anyone been able to charge a Max Pack from low SoC to full 100% with 2026.07? I am curious if the bug is still present. I no longer have a Max Pack so I can't test myself. I'll have to see if I can get a Max Pack loaner at the first service visit for the gen1 Large that I replaced my gen2...

It's been hard to get attention on this issue, both at the service level and in the community. There was a recent Out of Spec YouTube where they don't appear to be aware of the charging bug, but their vehicle clearly suffers from it. Wes even comments on how long it sits at 99%. This makes...

Yeah, the issue affects the whole charge curve. My vehicle had the same pattern, the % loss would get worse at low SoC. I suspect there is some logic where SoC gets adjusted down when the vehicle notices voltage is lower than expected, and this happens more at low SoC. Good call on topping off...

Thanks for testing! This confirms that gen1 Max Pack is affected in the same way as gen2. (I assumed this was the case, since Rivian told me it affects "all Max Packs", but it's nice to confirm.) I don't think you hit true 100%. If I unplug before it stops on its own, it'll flip to "100%" if it...

Hit a new peak, 107kW at "99%"! This was my first fast charge with 2026.03, as well. So this confirms that the bug is still present.

One question I have is how fast the vehicle can actually charge when balancing. I thought it was pretty limited, maybe 15 - 20kW max, or possibly < 11kW matching L2 speeds (I see the vehicle hang out at 7 - 10kW for 10 -15 minutes at the very end, and a Rivian tech also told me that's the normal...

Yeah, it seems like it's related to that "secret reservation." As my battery has degraded (based on drain test measurements), that reserved amount seems to have gone UP. Which doesn't make sense, I would expect the opposite...it should make its way down to zero and then main pack capacity...

I think this IS the issue. When I first saw the problem, it presented like yours w 10kWh added. Prior to 2025.22.30, it added 5kWh after 99%, then it went up to 10kWh after the update, then it slowly creeped up to the current 20kWh. 10kWh is ~7% of a 140kWh pack, a lot to be stuffed into a...

I've found the behavior highly variable. I try not to go below 10 - 15% with the trailer, 5% without it. I've been down to an indicated "0%" maybe 3 times on the road (just once past "true zero" where it shows "!" for range, drove about a mile), twice in my garage. 1 - 3% maybe a couple dozen...

Interesting that wheel/tire changes could trigger similar issues. I actually swapped to aftermarket ATs (Toyo SLs, so same efficiency anyways) a month prior to when I started having issues, but it was fine for a while. I don't know if that could be related. I also assume the other vehicle they...

The tech who finally diagnosed the issue had that as a theory, when I was first chatting with him. They looked into that, it doesn't seem to be the case. I also didn't have the problem when the vehicle was new. It started a couple days after the 2025.22.30 update, so hypothetically a module...

I really thought it was a cell balance issue, I kept insisting that they do balancing tests until they did, and supposedly everything is normal. I actually have rock sliders that I've been waiting to install for almost a year, because I kept thinking that my battery pack must have some cell...

What I mean is that RR shows just a single "99%" datapoint, see the graph below from the same session as the ElectraFi screenshots above. Immediately to the left is "98.5%". I also pasted the ElectraFi graph for this session. You can see it shows "99%" at the middle of the graph, and then there...

Why does the 75kWh AWD in your example charge much slower than the 75kWh RWD (32 min vs 25 min), but the 95kWh charges at the same rate for AWD and RWD (30 min)?

Yes, the point where it hits "99%" roughly matches between the vehicle display, Rivian app, and Rivian Roamer / ElectraFi data. (I think it may actually be at 98.5% in ElectraFi, rounded up, but close enough.) Rivian Roamer wasn't tracking the 99% behavior properly as of a week ago. It merges...