Recent content by Chi_Guy

My ipass sticker works fine sitting on the windshield just to the passenger side of the rearview mirror

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The threshold may be higher than 55°F for *unthrottled* charging to 100%. I just charged from starting battery level 56% and battery temp of 55°F (using DCFC nav workaround). It maintained 11kW until 97% battery, when it dropped to 8kW. I noted the battery temp at that time was 59°F. (The...

I like this theory but would make one amendment. In my experience 50°F battery temp is not high enough to avoid throttling above 96%. 65°F battery temp will charge to 100% without throttling.

Thanks for assembling this data! To clarify my charging experience: My Gen 2 Dual Max was delivered November 23, 2024. In cold temperatures I have seen a consistent stairstep down: ~11kW below 80%, ~7-8kW from 80-90%, 3-4kW from 90-96%, <2kW above 96%. I charge inside a garage typically...

The workaround of setting nav destination to a DCFC (to preheat the battery to ~50° F) works ok if you are driving just before starting a full charge. If your car is parked and cold is there any workaround that preheats the battery? (Short of sitting in the Rivian, shifted into drive, with...

Unfortunately the L2 charging still derated as before, down to 7.9kW at 81%. I stopped the charging at 85%, at which point the battery temp was 40°F.

I just updated to 2024.51.30, so I will try a similar test. Starting at 69% charge and battery temp of 37°F, I will charge to 100% tonight and report on the L2 charging power, noting any derating along the way.

I’ve seen this L2 charging behavior on: 1) Gen 1 Tesla Wall Connector w/ TeslaTap J1772 adapter 2) Gen 3 Tesla Universal Wall Connector 3) Clipper Creek charger at a hotel

Battery temp of 50F was just below the threshold to L2 charge to 100% at full power. In my latest test, I started at 69% charge and preheated battery temp to 50F. Then I began L2 charging at a constant 11.3 kW until 96%, when power stepped down to 6.9 kW. At that point the battery temp was...

This worked for me! I put in a nav destination with a nearby DCFC and was able to preheat the battery on my drive home. At a battery temp of 65F, I began L2 charging at home and got normal L2 charging at 11kW all the way from 66% to 100%. Although this is not ideal, it feels good to know this...

For my 2025 Dual Max R1S, I previously determined that this slow L2 charging was independent of my adapter. More recently I charged all the way to 100% on L2 charging, drove to below 60% over a couple of days, and then L2 charged again to 100%. The slow stepwise charging was still there. I...

For my own vehicle level 2 charging, I have determined that my adapter (TeslaTap J1772) is not the main contributor to the derating. I just finished charging on a Tesla Universal Wall connector using the J1772 plug and found a similar step down in power. From 11.1 kW initially to 7.1 kW (at...

Gen 2 R1S Dual Max here—I have been noticing a similar slowing in L2 home charging above 80%. I use a Gen 1 Tesla Wall Charger with a Tesla Tap J1772 adapter. For daily charging up to 70% battery I have no issues—11 kW constant rate. However, when I need to fully charge the battery I notice a...