Does ChargePoint Home Flex work with Rivian R1S?

What works & limitations

• J1772 connector matches Rivian's standard charge port directly
• 48A setting delivers approximately 11.52kW, matching R1S's 11.5kW onboard AC charger ceiling
• Charges R1S Large Pack (135kWh) from 10% to full in approximately 11 hours at 48A
• Adjustable from 16A to 50A — tunable in the ChargePoint app after installation without rewiring
• ChargePoint app enables time-of-use scheduling, off-peak automation, and per-session energy tracking
• Compatible with R1S Standard, Large, and Max Pack battery configurations
• 23-foot cable provides installation flexibility when the outlet and vehicle port are on opposite sides of the garage
• 50A maximum output exceeds the R1S's 11.5kW AC capacity — the vehicle's onboard charger caps the draw; the extra amperage headroom provides no additional speed
• ChargePoint Home Flex requires a 60A dedicated circuit for full 50A operation; a 50A circuit supports the 48A setting that maxes out the R1S — 48A is the practical sweet spot for this vehicle
• Amperage adjustment is made in the ChargePoint app after installation with no electrician callback required — this is the key advantage over fixed-output chargers if you add a second EV later
• ChargePoint Home Flex is Wi-Fi connected and supports ChargePoint's smart charging features including utility rate integration and energy reporting in the app
• For R1S Max Pack (149kWh), charging from 10% to full at 48A takes approximately 12 hours — plan for overnight plus morning time if starting very low