Charging Curve Summary Over 48 Recent DC Fast Charging (L3) Sessions

Rivian Mom · 2025-03-09T09:18:46+00:00

I had some free time yesterday so I decided to get some sound measurements in my R1S. I used the Rivian Elevations system not the Meridian. The input source was via Bluetooth from laptop so not the best sound reproduction but it does give you some idea of sound characteristics in the various positions throughout the cabin. Needless to say, I will be doing some tuning with the system's EQ. However, there is such of lack of mid and high frequencies in the third row that the only way to improve it would be to add extra speakers. I hope that there will be aftermarket solutions to this in the near future. Testing equipment and conditions: - Enclosed Garage - All windows and doors in Rivian closed - HVAC off - Test run with me sitting in passenger seat except when testing the passenger seat location when I sat in Driver's (interestingly BT would not stay connected unless I sat in the vehicle) - Sweeps were run with EQ flat, 3D Surround Sound Enhanced, Dynamic Sound Adjustment High (this setting did not matter as expected) - 3D Surround Sound settings with measurements taken in Driver's seat only Microphone: miniDSP UMIK-2 USB Reference Measurement Microphone (UMIK-2) on tripod Measure Program: REW V5.20.13 (REW room acoustics and audio device measurement and analysis software) Sound Sweep: 20 to 20,000 Hz Sound Level: -12.00dBFS Sample Rate: 44.1 kHZ

Vincent

Member

Wednesday at 2:47 PM

I've put a lot of miles on my R1T in the last month, and so I've accumulated a large number of charging sessions recently. I decided to quickly plot the data to see what an "average" curve looks like. It turns out there's not really a typical curve (which I suppose isn't really a surprise.).

Some notes:

• These are mostly Electrify America sessions, with a handful of EVgo and Rivian Adventure Network, and one Supercharger mixed in

• Every one of these sessions should have had battery precharging occur.

• Ambient ranged from about 30F to 70F

• There's one session in there that isn't actually a L3 session, but because of the way the telemetry is reported through HA, it made it past my filter. I didn't feel like adjusting my script to filter this out.

• On this whole trip, the only charging problem I had was with a RAN station. Go figure. I was entirely unable to charge, and had to go elsewhere, after phone support was clueless

• The brown session that dipped below 50kW a couple times between 40 and 60% was on EA.

For plotting, the curves are all truncated on the starting (low-SoC) side until charge rate hit at least 100kW. I did this to make the chart a little less busy.

You must log in or register to reply here.