Demo R2 - Energy Tracker

Idle period	Duration	Battery	Lost	Avg draw	%/day
Oct 24	2.2 h · 14 reports	76.0% → 76.0%	0.00 kWh • 0.0%	below one gauge step	-
Oct 23-24 (plugged in)	14.7 h	73.1% → 89.5%	-	-	-
Oct 23	1.7 h · 11 reports	77.4% → 77.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 22-23	24.3 h · 107 reports	81.4% → 80.4%	0.91 kWh • 1.0%	38 W	1.0%
Oct 22	1.7 h · 11 reports	86.4% → 86.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 21-22 (plugged in)	20.3 h	82.1% → 89.5%	-	-	-
Oct 21	2.2 h · 16 reports	85.0% → 84.5%	0.40 kWh • 0.4%	179 W	4.9%

Average 46 W (1.3%/day, 4.18 kWh total) across 11 idle periods • 6 plugged in (not measured).

Period-by-period breakdown

Idle period	Duration	Battery	Lost	Avg draw	%/day
Oct 24	2.2 h · 14 reports	76.0% → 76.0%	0.00 kWh • 0.0%	below one gauge step	-
Oct 23-24 (plugged in)	14.7 h	73.1% → 89.5%	-	-	-
Oct 23	1.7 h · 11 reports	77.4% → 77.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 22-23	24.3 h · 107 reports	81.4% → 80.4%	0.91 kWh • 1.0%	38 W	1.0%
Oct 22	1.7 h · 11 reports	86.4% → 86.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 21-22 (plugged in)	20.3 h	82.1% → 89.5%	-	-	-
Oct 21	2.2 h · 16 reports	85.0% → 84.5%	0.40 kWh • 0.4%	179 W	4.9%
Oct 20-21 (plugged in)	18.7 h	70.1% → 89.5%	-	-	-
Oct 20	2.2 h · 14 reports	76.7% → 76.7%	0.00 kWh • 0.0%	below one gauge step	-
Oct 19-20	19.9 h · 110 reports	79.9% → 78.9%	0.93 kWh • 1.1%	47 W	1.3%
Oct 19	2.7 h · 19 reports	84.8% → 84.3%	0.37 kWh • 0.4%	136 W	3.7%
Oct 18-19 (plugged in)	18.6 h	69.5% → 89.5%	-	-	-
Oct 18	1.7 h · 11 reports	74.1% → 74.1%	0.00 kWh • 0.0%	below one gauge step	-
Oct 17-18 (plugged in)	14.7 h	62.3% → 89.6%	-	-	-
Oct 17	7.7 h · 47 reports	74.6% → 74.6%	0.00 kWh • 0.0%	below one gauge step	-
Oct 16-17	23.8 h · 139 reports	88.8% → 87.0%	1.57 kWh • 1.8%	66 W	1.8%
Oct 15-16 (plugged in)	22.1 h	82.3% → 89.5%	-	-	-

Average 46 W (1.3%/day, 4.18 kWh total) across 11 idle periods • 6 plugged in (not measured).

Period-by-period breakdown

Idle period	Duration	Battery	Lost	Avg draw	%/day
Oct 24	2.2 h · 14 reports	76.0% → 76.0%	0.00 kWh • 0.0%	below one gauge step	-
Oct 23-24 (plugged in)	14.7 h	73.1% → 89.5%	-	-	-
Oct 23	1.7 h · 11 reports	77.4% → 77.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 22-23	24.3 h · 107 reports	81.4% → 80.4%	0.91 kWh • 1.0%	38 W	1.0%
Oct 22	1.7 h · 11 reports	86.4% → 86.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 21-22 (plugged in)	20.3 h	82.1% → 89.5%	-	-	-
Oct 21	2.2 h · 16 reports	85.0% → 84.5%	0.40 kWh • 0.4%	179 W	4.9%
Oct 20-21 (plugged in)	18.7 h	70.1% → 89.5%	-	-	-
Oct 20	2.2 h · 14 reports	76.7% → 76.7%	0.00 kWh • 0.0%	below one gauge step	-
Oct 19-20	19.9 h · 110 reports	79.9% → 78.9%	0.93 kWh • 1.1%	47 W	1.3%
Oct 19	2.7 h · 19 reports	84.8% → 84.3%	0.37 kWh • 0.4%	136 W	3.7%
Oct 18-19 (plugged in)	18.6 h	69.5% → 89.5%	-	-	-
Oct 18	1.7 h · 11 reports	74.1% → 74.1%	0.00 kWh • 0.0%	below one gauge step	-
Oct 17-18 (plugged in)	14.7 h	62.3% → 89.6%	-	-	-
Oct 17	7.7 h · 47 reports	74.6% → 74.6%	0.00 kWh • 0.0%	below one gauge step	-
Oct 16-17	23.8 h · 139 reports	88.8% → 87.0%	1.57 kWh • 1.8%	66 W	1.8%
Oct 15-16 (plugged in)	22.1 h	82.3% → 89.5%	-	-	-

Average 46 W (1.3%/day, 4.18 kWh total) across 11 idle periods • 6 plugged in (not measured).

Period-by-period breakdown

Idle period	Duration	Battery	Lost	Avg draw	%/day
Oct 24	2.2 h · 14 reports	76.0% → 76.0%	0.00 kWh • 0.0%	below one gauge step	-
Oct 23-24 (plugged in)	14.7 h	73.1% → 89.5%	-	-	-
Oct 23	1.7 h · 11 reports	77.4% → 77.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 22-23	24.3 h · 107 reports	81.4% → 80.4%	0.91 kWh • 1.0%	38 W	1.0%
Oct 22	1.7 h · 11 reports	86.4% → 86.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 21-22 (plugged in)	20.3 h	82.1% → 89.5%	-	-	-
Oct 21	2.2 h · 16 reports	85.0% → 84.5%	0.40 kWh • 0.4%	179 W	4.9%
Oct 20-21 (plugged in)	18.7 h	70.1% → 89.5%	-	-	-
Oct 20	2.2 h · 14 reports	76.7% → 76.7%	0.00 kWh • 0.0%	below one gauge step	-
Oct 19-20	19.9 h · 110 reports	79.9% → 78.9%	0.93 kWh • 1.1%	47 W	1.3%
Oct 19	2.7 h · 19 reports	84.8% → 84.3%	0.37 kWh • 0.4%	136 W	3.7%
Oct 18-19 (plugged in)	18.6 h	69.5% → 89.5%	-	-	-
Oct 18	1.7 h · 11 reports	74.1% → 74.1%	0.00 kWh • 0.0%	below one gauge step	-
Oct 17-18 (plugged in)	14.7 h	62.3% → 89.6%	-	-	-
Oct 17	7.7 h · 47 reports	74.6% → 74.6%	0.00 kWh • 0.0%	below one gauge step	-
Oct 16-17	23.8 h · 139 reports	88.8% → 87.0%	1.57 kWh • 1.8%	66 W	1.8%
Oct 15-16 (plugged in)	22.1 h	82.3% → 89.5%	-	-	-

Average 46 W (1.3%/day, 4.18 kWh total) across 11 idle periods • 6 plugged in (not measured).

Period-by-period breakdown

Idle period	Duration	Battery	Lost	Avg draw	%/day
Oct 24	2.2 h · 14 reports	76.0% → 76.0%	0.00 kWh • 0.0%	below one gauge step	-
Oct 23-24 (plugged in)	14.7 h	73.1% → 89.5%	-	-	-
Oct 23	1.7 h · 11 reports	77.4% → 77.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 22-23	24.3 h · 107 reports	81.4% → 80.4%	0.91 kWh • 1.0%	38 W	1.0%
Oct 22	1.7 h · 11 reports	86.4% → 86.4%	0.00 kWh • 0.0%	below one gauge step	-
Oct 21-22 (plugged in)	20.3 h	82.1% → 89.5%	-	-	-
Oct 21	2.2 h · 16 reports	85.0% → 84.5%	0.40 kWh • 0.4%	179 W	4.9%
Oct 20-21 (plugged in)	18.7 h	70.1% → 89.5%	-	-	-
Oct 20	2.2 h · 14 reports	76.7% → 76.7%	0.00 kWh • 0.0%	below one gauge step	-
Oct 19-20	19.9 h · 110 reports	79.9% → 78.9%	0.93 kWh • 1.1%	47 W	1.3%
Oct 19	2.7 h · 19 reports	84.8% → 84.3%	0.37 kWh • 0.4%	136 W	3.7%
Oct 18-19 (plugged in)	18.6 h	69.5% → 89.5%	-	-	-
Oct 18	1.7 h · 11 reports	74.1% → 74.1%	0.00 kWh • 0.0%	below one gauge step	-
Oct 17-18 (plugged in)	14.7 h	62.3% → 89.6%	-	-	-
Oct 17	7.7 h · 47 reports	74.6% → 74.6%	0.00 kWh • 0.0%	below one gauge step	-
Oct 16-17	23.8 h · 139 reports	88.8% → 87.0%	1.57 kWh • 1.8%	66 W	1.8%
Oct 15-16 (plugged in)	22.1 h	82.3% → 89.5%	-	-	-

Each bar is one park between drives, measured from the car's last report after parking to its first report on waking. The car only reports when it wakes or checks in, so a long park may rest on just a few readings, and a short park can read zero: the battery gauge moves in 0.1% steps, about 88 Wh each. Plugged-in periods are not measured: the car tops itself off.

Pack health

Pack capacity

91.4 kWh

API estimate, not usable

Implied full range

336 mi

range ÷ battery %

Pack capacityImplied full range100 = 91.5 kWh baseline (first week)

Charging

Charging log

October · 8 sessions · 126.8 kWh · 485 mi

Oct 24, 11:00 PM · 136 minAC

Home

24.9 kWh$7.46 cost$11.12 saved ($4.89/gal)95 mi gained11.0 kW avg62% → 90%

62% → 90% · 11.0 kW avg

11:00 pm → 1:15 am

Oct 23, 11:00 PM · 83 minAC

Home

15.2 kWh$4.54 cost$6.78 saved ($4.89/gal)58 mi gained11.0 kW avg73% → 90%

73% → 90% · 11.0 kW avg

11:00 pm → 12:22 am

Oct 21, 11:00 PM · 41 minAC

Home

7.5 kWh$2.24 cost$3.34 saved ($4.89/gal)28 mi gained11.0 kW avg82% → 90%

82% → 90% · 11.0 kW avg

11:00 pm → 11:40 pm

Oct 20, 11:00 PM · 98 minAC

Home

17.9 kWh$5.38 cost$8.04 saved ($4.89/gal)69 mi gained11.0 kW avg70% → 90%

70% → 90% · 11.0 kW avg

11:00 pm → 12:37 am

Oct 18, 11:00 PM · 101 minAC

Home

18.5 kWh$5.55 cost$8.28 saved ($4.89/gal)71 mi gained11.0 kW avg69% → 90%

69% → 90% · 11.0 kW avg

11:00 pm → 12:40 am

Oct 18, 01:27 PM · 6 minDC fast

Rivian Adventure Network

10.8 kWh$2.89 saved ($5.17 paid · $4.89/gal, $0.48/kWh) edit41 mi gained103.4 kW avg73% → 85%

73% → 85% · 103.4 kW avg

Charging location: Rivian Adventure Network

1:27 pm → 1:33 pm

Oct 17, 11:00 PM · 134 minAC

Home

24.6 kWh$7.39 cost$11.03 saved ($4.89/gal)94 mi gained11.0 kW avg62% → 90%

62% → 90% · 11.0 kW avg

11:00 pm → 1:14 am

Oct 15, 11:00 PM · 41 minAC

Home

7.5 kWh$2.26 cost$3.39 saved ($4.89/gal)29 mi gained11.0 kW avg81% → 90%

81% → 90% · 11.0 kW avg

11:00 pm → 11:41 pm

Home charging costed at $0.30/kWh (set RIVIAN_HOME_KWH_RATE in .env). Away sessions show no cost; public rates vary. Tap "? add cost" on a DC fast charge to record what you paid.

Fuel savings vs gas

Fuel savings by session

Per charging session, priced at each day's gas price

Date	Type	kWh	EV cost	Gas $/gal	Gas cost	Saved
2026-10-24	AC	24.9	$7.46	$4.89	$18.58	$11.12
2026-10-23	AC	15.2	$4.54	$4.89	$11.33	$6.78
2026-10-21	AC	7.5	$2.24	$4.89	$5.57	$3.34
2026-10-20	AC	17.9	$5.38	$4.89	$13.42	$8.04
2026-10-18	AC	18.5	$5.55	$4.89	$13.83	$8.28
2026-10-18	DC	10.8	$5.17	$4.89	$8.06	$2.89
2026-10-17	AC	24.6	$7.39	$4.89	$18.43	$11.03
2026-10-15	AC	7.5	$2.26	$4.89	$5.65	$3.39

Comparison assumes 25 MPG; $4.89/gal is used when a gas price is unavailable.

Trip energy is measured from battery % drop, which usually reads a little higher than the car's own trip screen.

Durations marked ~ are approximate: the drive started sometime inside the bracket, between polls.

Daily activity

Battery

End of day

Phantom drain

Pack health

Charging

Charging log

Fuel savings vs gas

Fuel savings by session

DC charging cost