How long does it take to charge a Rivian R1S?

About 17h 32m from 10% to 100% on a typical 7.7 kW home Level 2 charger, or 57m at peak DC fast charging (220 kW). Level 1 (standard 120 V outlet) takes 96h 26m.

What is the max charging rate for a Rivian R1S?

AC: 11.5 kW on-board limit. DC fast charging: 220 kW peak.

How Long to Charge a Rivian R1S

Charging a Rivian R1S (135 kWh battery) from 10% to 100% takes about 17h 32m on a typical 7.7 kW home Level 2 charger — or just 57m on a DC fast charger.

Level 1 (1.4 kW wall outlet)96h 26m

Level 2 home (7.7 kW)17h 32m

DC fast charge (220 kW peak)57m

All times above are for 10% → 100%. Rivian R1S accepts up to 11.5 kW AC and 220 kW DC peak.

Detailed charging scenarios

Charger	0 → 80%	20 → 80%	10 → 100%
Level 1 — 120 V outlet (1.4 kW)	85h 43m	64h 17m	96h 26m
Level 2 home — 240 V 32 A (7.7 kW)	15h 35m	11h 41m	17h 32m
Level 2 max — 240 V 48 A (11.5 kW)	10h 26m	7h 50m	11h 44m
DC fast charge — 50 kW	2h 42m	2h 02m	4h 10m
DC fast charge — 150 kW	54m	41m	1h 23m
DC fast charge — 220 kW (max for this car)	37m	28m	57m

How we calculated this

The Rivian R1S has a 135 kWh usable battery, an 11.5 kW on-board AC charger, and a 220 kW peak DC charging rate.

For AC charging (Level 1 and Level 2), actual rate is the lesser of the charger’s output and the car’s on-board AC limit. We assume ~10% loss between AC input and the battery.

For DC fast charging, real-world rate tapers above ~80% state of charge to protect the battery. We model 0–80% at 80% of peak rate, and 80–100% at 30% of peak — consistent with published curves from Tesla, Hyundai/Kia, Ford, and Rivian. This is why "0 to 80%" is the marketing number for DCFC: filling the last 20% takes nearly as long as the first 80%.

FAQ

Why is DC fast charge so much faster than Level 2?

Level 2 home charging uses your home’s 240 V circuit, capped at 11.5 kW (and at the car’s on-board AC charger — for the Rivian R1S, that’s 11.5 kW). DC fast chargers bypass the on-board charger and send DC current directly to the battery at up to 220 kW — about 19× faster.

Should I always charge to 100%?

For lithium iron phosphate (LFP) batteries, yes. For nickel-based chemistries (most non-LFP EVs), keeping the daily charge limit at 80–90% extends battery life noticeably. Only charge to 100% before long trips.

Is Level 1 charging useful?

Only if you drive less than ~40 miles/day. Level 1 adds about 4–5 miles of range per hour for the Rivian R1S — enough for a short commute if you plug in every night, but inadequate for higher daily mileage.