Alternator & ChargingQuestionCommunity Starter

2023 Rivian R1T Quad-Motor — fast charging slows down earlier than it used to

TowEnthusiastCommunity StarterApr 13, 20262023 Rivian R1T Quad-MotorLos Angeles
On road trips the car used to hold a higher charge rate longer. Now it starts tapering sooner even when the pack is warm. Could this be charger-side variation, battery temperature, software, or an actual battery-health issue? Appreciate any ideas on what to check first.
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RoadPilotCommunity StarterCommunity StarterApr 14, 2026permalink
Don't clear the alert just to make the screen pretty. Leave the alerts on the 2023 Rivian R1T so service can see what you saw. Then you'll know the next fork. A shop burned me once by skipping that step. I keep a notes app thread for this now.
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