What EV Charger Do You Need for a 2025 Rivian R1S?
You need a 48 amp Level 2 home charger to fill the 163.7 kWh battery overnight. The vehicle accepts up to 11.5 kW of AC power, which sets the absolute ceiling for home charging speeds. Going beyond 48 amps wastes money because the onboard charger cannot draw more current. Buying a smaller unit slows down your daily turnaround time for no good reason.
The numbers
| Maximum AC charging rate | 11.5 kW (48 A) |
|---|---|
| Charger size to buy | 48 A |
| Circuit breaker required | 60 A |
| Outlet / connection | hardwired (a 48 A EVSE must be hardwired -- no household receptacle is rated for it) |
| Charge port | J1772 |
| Full charge on Level 2 | about 14.2 hours |
| Range added per hour (Level 2) | about 29 miles |
| Full charge on a 120 V outlet | about 114 hours |
| Range added per hour (120 V) | about 3.6 miles |
| EPA rated range | 410 miles |
| Energy for a full charge | about 163.7 kWh at the wall |
Why 48 amps and not more
The 48 amp draw replenishes 29 miles of range every hour. A full recharge from zero takes 14.2 hours at this maximum rate. Hooking this vehicle to a larger 50 amp charger like the ChargePoint Home Flex yields no speed gains because the car caps its intake at 48 amps. Dropping down to a 32 amp or 40 amp supply throttles the power delivery and stretches total charging times. Stick to the exact onboard limit to maximize utility.
What the install involves
Wiring a 48 amp continuous load requires a 60 amp breaker and heavy-gauge copper conductors. National Electrical Code mandates hardwiring for any continuous load above 48 amps, meaning no standard wall outlet will accept this hardware safely. A 48 amp EVSE must be hardwired directly to the electrical panel. Hire a licensed electrician to run the line, mount the unit, and inspect your main service capacity before turning the breaker on.
Chargers that match this car
Energy monitoring built in. Hardwire it for the full 48 A.
Compact unit, good for tight garages.
Adjustable from 16 A to 50 A in the app, which helps if your panel is tight.
Worth having as well
Common questions
- Can I use a standard wall outlet?
- No household receptacle is rated for a 48 amp continuous load. You must hardwire the charger to a dedicated circuit.
- What breaker size do I need?
- A 60 amp breaker is required to supply the 48 amp charger safely under electrical code rules for continuous loads.
- How long does a full charge take?
- A complete fill from zero takes 14.2 hours using the maximum Level 2 rate of 48 amps. Standard Level 1 household charging stretches that same task to 114 hours.
- Does the charging cable plug into the car?
- This model features a J1772 connector. The 2025 model year falls in the industry transition, so verify your specific port configuration before buying equipment.
Other vehicles
Charging times derived from EPA data for the 2025 Rivian R1S (covering 22 EPA trim listings). Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.