Charging w/portable battery?

[JacobAZ]

The 30A outlet on many of these units is a TT-30, which is just a 30A 120V outlet. With an adapter, plugged into the 14-50 on the mobile EVSE, thats going to be limited to a slightly fast L1 charge at 120V/16A. I've never tried it, but that is what I've read.

Correct that the 30 amp outlets on portable batteries are TT-30 and Rivian mobile charger needs a TT30 adaptor and a neutral ground bonding pulg. TT-30 is the standard for RV and campground 30 amp sockets. However, the output from the battery can be 120v/30 amp = 3.6kw per hour. There is no need to derate the charge amp on the Rivian, unless you want to. A battery will only output what it is capable of. The EVSE will negotiate with the battery to choose the charge amps. If your concerned about the TT-30 adapter overheating at 30 amps, you can set the Rivian to 24 amps (80%, and 2.88 kw per hour). Not sure what you read, but this is real world what I do.

Sponsored

 

[BCondrey]

Correct that the 30 amp outlets on portable batteries are TT-30 and Rivian mobile charger needs a TT30 adaptor and a neutral ground bonding pulg. TT-30 is the standard for RV and campground 30 amp sockets. However, the output from the battery can be 120v/30 amp = 3.6kw per hour. There is no need to derate the charge amp on the Rivian, unless you want to. A battery will only output what it is capable of. The EVSE will negotiate with the battery to choose the charge amps. If your concerned about the TT-30 adapter overheating at 30 amps, you can set the Rivian to 24 amps (80%, and 2.88 kw per hour). Not sure what you read, but this is real world what I do.

I get that. The Rivian mobile EVSE itself has a limit on 120V charging I think. It's not that the human derates it, it is that the EVSE does. Even if you plug it into a 14-50, the EVSE is only going to "see" 120V, and limit it. See page 13 here: portable-charger-guide-en-us-fr-ca-101822.pdf
Actually, it is 12A, not 16A. There are other mobile EVSE that do 16A I'm thinking.

 

[SwampNut]

I get that. The Rivian mobile EVSE itself has a limit on 120V charging I think. It's not that the human derates it, it is that the EVSE does. Even if you plug it into a 14-50, the EVSE is only going to "see" 120V, and limit it. See page 13 here: portable-charger-guide-en-us-fr-ca-101822.pdf
Actually, it is 12A, not 16A. There are other mobile EVSE that do 16A I'm thinking.

I've charged as high as 32A with the Rivian EVSE. I have spent days with it running at 24A (lower for safety) and hours with it at 26A (being watched).

I use a home-made neutral bonding plug and this: https://a.co/d/0dwstpzF

Edit to add: I think you are confused and citing what happens if you put the NEMA 15P pigtail into the EVSE. With the 14-50 and the charging adapter, it won't limit itself.

 

[VSG]

The 30A outlet on many of these units is a TT-30, which is just a 30A 120V outlet. With an adapter, plugged into the 14-50 on the mobile EVSE, thats going to be limited to a slightly fast L1 charge at 120V/16A. I've never tried it, but that is what I've read.

No, this is not correct.

I get that. The Rivian mobile EVSE itself has a limit on 120V charging I think. It's not that the human derates it, it is that the EVSE does. Even if you plug it into a 14-50, the EVSE is only going to "see" 120V, and limit it. See page 13 here: portable-charger-guide-en-us-fr-ca-101822.pdf
Actually, it is 12A, not 16A. There are other mobile EVSE that do 16A I'm thinking.

No. What @JacobAZ says is correct. I charge my R1T at campgrounds from the TT-30 using the Rivian mobile connector and an EV specific TT-30 to 14-50 adapter. I have been doing this for 4 years.

The TT-30 can provide 30A @120V under these conditions, which you should dial back to 24A in the car to protect the wiring behind the outlet because this is a "continuous use” application.

 

[BCondrey]

No, this is not correct.

No. What @JacobAZ says is correct. I charge my R1T at campgrounds from the TT-30 using the Rivian mobile connector and an EV specific TT-30 to 14-50 adapter. I have been doing this for 4 years.

The TT-30 can provide 30A @120V under these conditions, which you should dial back to 24A in the car to protect the wiring behind the outlet because this is a "continuous use” application.

That's good to know, thanks!

 

[SwampNut]

https://www.rivianforums.com/forum/threads/i-installed-a-gasoline-engine-in-my-rivian.53354/

Sponsored