Charging Ecoflow Delta Pro Ultra with Rivian R1T outlet

[NND]

Hi,
I recently bought an Ecoflow Delta Pro Ultra for home backup power. The idea is to use the Ecoflow as a "buffer" that can handle high power peaks (such as when using a microwave), but use my Rivian R1T to charge the Ecoflow via the 110V, 1500W outlet. My question is whether I need to plug a neutral ground bonding to the Ecoflow for the truck to be able to charge the Ecoflow battery or not. I hope that people with more experience here can help me with this. The goal is to use the Rivian battery as backup power to my home via the Ecoflow Delta Pro Ultra much higher wattage capacity for emergency situations. Thank you!

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[logan]

Hi,
I recently bought an Ecoflow Delta Pro Ultra for home backup power. The idea is to use the Ecoflow as a "buffer" that can handle high power peaks (such as when using a microwave), but use my Rivian R1T to charge the Ecoflow via the 110V, 1500W outlet. My question is whether I need to plug a neutral ground bonding to the Ecoflow for the truck to be able to charge the Ecoflow battery or not. I hope that people with more experience here can help me with this. The goal is to use the Rivian battery as backup power to my home via the Ecoflow Delta Pro Ultra much higher wattage capacity for emergency situations. Thank you!

FWIW, I think you might be thinking of the extra complexity with TT30 adapters to work with your mobile adapter. For charging your ecoflow it should be fine the 110V inverter output as long as the amperage pull isn't too high. Even there your ecoflow app probably let's you turn it down to avoid this. I do basically the same thing with a yoshino.

 

[supervlover]

Not need in that direction. You are simply using "any" pure sine inverter (1500w in this case) to recharge the DU. The other way from power station to charge an EV may require the grounding plug.

 

[supervlover]

FWIW, I think you might be thinking of the extra complexity with TT30 adapters to work with your mobile adapter. For charging your ecoflow it should be fine the 110V inverter output as long as the amperage pull isn't too high. Even there your ecoflow app probably let's you turn it down to avoid this. I do basically the same thing with a yoshino.

Yoshino B4000?

 

[logan]

Yoshino B4000?

Yeah, so I can buffer my iceco fridge in the gear tunnel and my airstream too. (Will test the latter in a few weeks. Wasn't able to last trip.)

 

[supervlover]

Yeah, so I can buffer my iceco fridge in the gear tunnel and my airstream too. (Will test the latter in a few weeks. Wasn't able to last trip.)

It's a great unit, I recently sold mine to buy an extra battery for the Ultra.

 

[logan]

It's a great unit, I recently sold mine to buy an extra battery for the Ultra.

I like that it is light and fits perfectly in the gear tunnel. I'm hoping it will make it so I can run some of the stuff I can't normally run in the airstream off its limited solar and lithium batteries. Namely A/C during the summer and the microwave/convection oven. Also just extend the time I can be disconnected and running stuff. Leverage the truck's huge batteries.

I imagine you like OP are using your ultra for home backup and need a lot more power?

 

[supervlover]

I like that it is light and fits perfectly in the gear tunnel.

I imagine you like OP are using your ultra for home backup and need a lot more power?

B4000 is at that perfect weight/wh ratio. Big enough to potentially run high loads if needed but not backbreaking like the 100lb Delta Pro.

The R1S served as home backup during the July hurricane outage and I just wanted another 2ndary energy source. Don't really need whole house power, just enough to run 1-2kw. It was either 48v rack batteries or a nicer looking Delta Ultra.

 

[tplociniak]

I have the delta pro ultra as well with the smart home panel, the only downside is that Ecoflow deactivates the 120v inlet when its hooked up to the SHP2, so it wont accept charging. But as long as you are not connected to that, the Rivian charges the DPU just fine, have verified that a few times.

 

[NND]

Great! My goal is to end up using the Rivian battery to charge the Ecoflow Delta Pro Ultra and I also have 800W of solar panels. Both combined could give me plenty of power to stay off grid for a week or two, I estimate. So no neutral bonding when charging Ecoflow with the Rivian 110V outlet, I just need to make sure that the input Wattage on the Ecoflow is set to not more than 1500W. After a lot of research, I believe this is the cheapest option for emergencies.

 

[Redmond Chad]

I bought some Ecoflow Delta Pros (not Ultra) about a year ago for the same reason. I have in the past charged the Delta Pros from the Rivian, but not while the Ecoflows were powering the house. There is a physical switch on each Ecoflow that says to take 800W of power instead of 1500W, and I have that turned on.

Our power went out tonight, so I got the Ecoflows powered up and running the house, and then I went to plug the Ecoflow in to the Rivian's 120V outlet. As soon as I did that...the Rivian outlets turned off. No messages, they just silently turned off. I know they have a limit, but they should be able to handle 800W.

This does not happen if I plug in a small 120V light instead of the Ecoflow Delta Pro.

I am using an extension cord (I have to, the Ecoflow's cords are all so dang short) but it's heavy-duty (50' 12 AWG which should be able to handle 2400W), and again the light works fine when using the extension cord. I am only plugging in one of my two Ecoflow Delta Pros.

Rivian and Ecoflow both have extremely little documentation on these things. And I'm sure if I contact either one, they'll just blame the other one - at least for as long as this power outage lasts. Anybody have any ideas for things I can try?

Thanks.

 

[jjswan33]

I bought some Ecoflow Delta Pros (not Ultra) about a year ago for the same reason. I have in the past charged a Delta Pros from the Rivian, though only as a test. There is a physical switch on the Ecoflow that says to take 800W of power instead of 1500W, and I have that turned on.

Our power went out tonight, so I got the Ecoflows powered up and running the house, and then I went to plug the Ecoflow in to the Rivian's 120V outlet. As soon as I do...the Rivian outlets turn off. No messages, they just silently turn off. I know they have a limit, but they should be able to handle 800W.

This does not happen if I plug in a small 120V light instead of the Ecoflow Delta Pro.

I am using an extension cord (I have to, the Ecoflow's cords are all so dang short) but it's heavy-duty (50' 12 AWG which should be able to handle 2400W), and again the light works fine when using the extension cord. I am only plugging in one of my two Ecoflow Delta Pros.

Rivian and Ecoflow both have extremely little documentation on these things. And I'm sure if I contact either one, they'll just blame the other one - at least for as long as this power outage lasts. Anybody have any ideas for things I can try?

Thanks.

You most likely have a ground loop. You can't connect the ground from the truck to the eco flow

If there is a setting to turn off the ground-neutral bond on the Ecoflow that might work, not sure if such a setting exists. Otherwise you could try one of those old school plugs that allows you to plug in items with three prongs into a old school 2 prong outlet.

Good luck.

 

[NND]

I bought some Ecoflow Delta Pros (not Ultra) about a year ago for the same reason. I have in the past charged a Delta Pros from the Rivian, though only as a test. There is a physical switch on the Ecoflow that says to take 800W of power instead of 1500W, and I have that turned on.

Our power went out tonight, so I got the Ecoflows powered up and running the house, and then I went to plug the Ecoflow in to the Rivian's 120V outlet. As soon as I do...the Rivian outlets turn off. No messages, they just silently turn off. I know they have a limit, but they should be able to handle 800W.

This does not happen if I plug in a small 120V light instead of the Ecoflow Delta Pro.

I am using an extension cord (I have to, the Ecoflow's cords are all so dang short) but it's heavy-duty (50' 12 AWG which should be able to handle 2400W), and again the light works fine when using the extension cord. I am only plugging in one of my two Ecoflow Delta Pros.

Rivian and Ecoflow both have extremely little documentation on these things. And I'm sure if I contact either one, they'll just blame the other one - at least for as long as this power outage lasts. Anybody have any ideas for things I can try?

Thanks.

I had the same thing happen to me with the Ecoflow Ultra, my R1T would turn off the outlet without any notification. I hadn't reduced the maximum input on the Ultra, so when I limited my input to around 1,200W, it ended up working. I did a simple test of plugging different things to the Ultra while at the same time charging it from the R1T, and it worked (picture attached). Will this work for a long period of time? I don't really know. Time will tell when I have a power outage!

 

[DarthBrader]

It looks like they fixed this with the Delta Ultra based on OP's results, but the Delta Pro (and many earlier Delta units) do not have true pass-through charging for AC. When the AC outlets are on while also charging from AC, the Delta Pro goes into a "bypass" mode where the AC outputs are directly connected through to the AC inputs. My understanding is that this is because circuitry is shared between the AC charger and inverter--you can't run both at once.

This bypass mode can cause some weirdness. Because the Delta Pro should support 30A AC output but only 20A (or less) AC input, it is easy to overload the AC input this way. Also, the load on the AC input will equal the Delta Pro battery charging current PLUS the AC output from the Delta Pro. So if you're charging the Delta Pro at 800W and also have 1000W plugged into it, it's drawing 1800+ watts at the AC input.

The second issue with bypass mode is with grounding. In bypass mode, the hot, neutral, and ground are connected straight through the Delta Pro from AC input to AC output. If you plug the AC output into a home transfer switch, then you will have a neutral-ground bond on the output that will trip any GFCI on the charging input. Not sure if the Rivian AC outputs have GFCI, but I suspect they do. You could solve that by floating the ground at the AC input using one of the adapters mentioned by @jjswan33.

I've seen stories that folks have fried their Delta Pros by connecting both the input and the output to the grid. E.g. plug the AC inptut into a home outlet, and plug the AC output into a transfer switch connected to the same main panel. It seems like that should work, but people have been surprised to find it fries their units. This puts the same N-G bond on both the input and output of the Delta Pro, and somehow it apparently causes a short. I have my suspicions that this is related to swapped hot and neutral conductors on some units (this was a known issue with the TT-30 output on early Delta Pros) or elsewhere in the setup, but I'm not sure about that.

None of this behavior is documented well (or at all) in the EcoFlow manuals unfortunately. I only know it from experience with them and from reading forums.

 

[Redmond Chad]

Thanks for the input, gang. Our house was not drawing very much power last night, so I suspect the grounding issue is most likely the problem (for me, right now, anyway). I will look into the adapters.

But until then I will just use the Ecoflows to power the house during the day, and at night we'll turn the power off to the house and charge the Ecoflows from the Rivian. (I tested that this morning and sure enough it works just fine when the Ecoflows are not powering the house).

The Delta Pro Ultra was introduced about a week after I got my Delta Pros. Too bad, as they sound better in a lot of ways (more capacity, stackable, 240V from a single unit, etc).

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