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Sacramento Area Rivian Club

A group of Rivian enthusiasts in the greater Sacramento area (Roseville, Eldorado Hills, Rocklin.) Join us to discover local events and EV focused off-roading discussions.
Sacramento Area Rivian Club

Sacramento Area Rivian Club

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RIVIAN CLUBS / GROUPS
Language
English (US)
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Cafireman

Charging Dilemma? Currently using a 60a Breaker 240v on a Nema 1450 Receptacle and getting about 15 mi/hour charge rate. I was looking at a Juicebox 40 and their specs show a 20mi/hour charge rate. I called Rivian and they claim their OEM Charge Box charges at 25mi/hour rate. I found a Juicebox 40 for about $300 online, but they want a min of $500 for the OEM Rivian, what's the consensus on chargers?
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Joseph D
Joseph D
Mi/hour is relative to the efficiency of the vehicle, and when needing advice its better to use what the power delivery is in kilowatts. Keep in mind that whatever plug you are pulling power from can only deliver 80% of the spec'd power continuously. If you are using the included portable charger (as I assume you are as you are plugged into a nema 14-50), it is a 40 amp charger that can pull 32 amps from the wall. 32amps x ~240 V = 7680 watts or ~7.7 kilowatts. 7.7 kw x 2.2 mi/kw (lets use this value for efficiency) =16.8 miles/hour. Take off ~10% of that for overhead of vehicle functions 16.8 * .9 = 15.2 miles/hour. Thus reaches your value you are getting. Realistically you would only get more power by getting a 50 amp charger (mobile or wall mounted) which would net you around 9.6 kw charging speed.

If you went for the OEM Rivian wall box, its a 60 amp charger that is installed hard-lined by a electrician. This is only necessary if you are going to use it in the future for a vehicle-to-home setup that Rivian says is on the way. Otherwise you can get any old mobile or wall charger and mount it yourself and plug it into the 14-50 outlet.

Side note: Some Electricity providers provide rebates for installing chargers, so check what yours will give you for it. I see from your account that you are in Granite Bay so I don't believe you have SMUD like I do, but for example SMUD gave me 500$ towards a 32amp home charger (that was on their approved list) and a reduced rate from midnight-6am for EV charging.
defcon888
defcon888
We originally got a Lectron 32a for our Toyota RAV Prime and had a 14-50 plug installed on the side of the house. It has been outside 24-7/365 through all the weather we have had for over 2 years and it has worked flawlessly. I get about 12 miles per hour of charge. We start at 9 pm and go until 9 am (PG&E) and that will give us over 140 miles. If I need to juice up, I stop at the REI in Sacramento or Manteca and use the RAN chargers. We have the R1T





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