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▲ 0 r/Ecoflow_community

Voltage in cold temps - Delta 2 MAX - Should I be concerned?

I am debating running the following panel setup to my Delta 2 MAX (and Delta 2 MAX extra battery).

4 Callsun 200W Bifacial panels, Max Power Amp 23.74V, 8.43A, Open-circuit Voltage 27.31V, Short-circuit Isc 8.91A. I ideally want to run at least one set into an input in Series.

I thought the math checked out to run these in both Series, Parallel, or even 2S2P if I want to later "over panel" however Claude AI says I need to be careful of the Voltage going higher than 60V during the winter temperatures!

However, ChatGPT says I don't need to worry!?

Which AI Chatbot is right?

During normal temps each panel would be 27.3 Voc, but apparently if it gets cold (0 Fahrenheit) the panels would each produce slightly over 30.7 Voc.

The panels will be placed at elevation of 3700 ft elevation in the Sierra Nevada foothills. While there is snow, it rarely gets below 0 (its happened once in 60 years).

It's worth while to mention, this set up is powering a starlink/security camera setup on a rural piece of land where trespassers break on to dump trash and illegally poach/mine.

Should I be concerned about running these panels in Series or 2S2P?

Any other advice as what I could do to mitigate the risk? Longer cable maybe? I guess as a worst case scenario I could wire the panels in Parallel during the winter, and Series in the summer.

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u/TheNimbleNavigator45 — 6 hours ago
▲ 1 r/Ecoflow_community

Latest Self-Immolating EcoFlow Product

I've had a number of the EcoFlow NextGen 220W Bifacial solar panels crack, but this is my first experience with one melting from an internal short. This further reduces my confidence in using these.

https://preview.redd.it/mwxfdodecywg1.jpg?width=3024&format=pjpg&auto=webp&s=3a58aea469b9817233cc0450e3619dd334f20f34

https://preview.redd.it/77umzndecywg1.jpg?width=3024&format=pjpg&auto=webp&s=2720a2cf05f368a8940394e02975bef2616a2f6a

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u/MysteriousNotice9979 — 9 hours ago
▲ 1 r/Ecoflow_community

I don't recommend the Delta 3 Plus as a UPS

I purchased the Delta3 Plus with the intention to use it as a UPS. I ordered early and waited. The D3P showed up but for a long time no UPS software. Eventually the wait go so long I purchased an APC UPS as that was available and it actually works.

So while I have the D3Plus, I have to discharge and recharge it every 3 months. This process is another gift EF gave to me for buying and not using it, but needed to keep in god health "just in case". After a long time I became motivated to install the Power Manager software on a non-critical machine just to see how useful it could be as a UPS.

TLDR; Its not good.

The instructions are not very clear even though it is a very simple process. However, there are some issue you should know about.

  • The power manager app needs to be running and you have to have have the D3P plugged into the wall, the connect USB cable and then connect the power cable...Every time you do a restart.
  • The USB cable cannot be USB-C to USB-C. For some reason in 2026 EF can't figure out that many of us are living a USB-A free existence. This took me a while to figure out from a small not in the guide. Requires USB-A on the device side and USB-C into the D3P. I thankfully found a USB-A to USB-C data cable and a computer that had a USB-A port to try.
  • If you close the Power Manager app while the PC is under UPS power, you lose UPS functionality and cannot recover it until you have AC power from the grid supplying the D3P again. The only way to reset is to disconnect the PC from the AC power, connect the USB cable and then connect then reconnect the power to the PC. Startup and run the power manager app again.
  • There is no way to send any of the UPS info via internet to the phone app about power loss and UPS status. No emails either.

Overall I give this feature a D- compared to what it could have easily been. If you're only looking to use an EF unit as a UPS, you're better off with something else.

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u/bigtom_x — 19 hours ago
▲ 11 r/Ecoflow_community

Why can I not get more than 600w?

I have a new eco stream 800w microinverter a two 460w panels.

ECOFLOW Stream 800W Micro... https://www.amazon.co.uk/dp/B0F2FTSZKG?ref=ppx\_pop\_mob\_ap\_share

U.K. based, full sunny midday. The panels are aligned, cool windy day, and I expect them to do close to 400w each. I understand I will rarely hit 460w on each panel and the microinverter will clip the output anyway.

Also worth noting have a house array with 12x 405w panels and they are at the same time producing 380w each.

So why can I never get more than 300w each on the ecoflow?

u/r0bbyr0b2 — 12 hours ago
▲ 2 r/Ecoflow_community

Stream Firmware Update 1.0.2.1 broke my setup

This is a reminder to myself and everyone to not just update things that are already working.

I did the update to my stream ultra x and now when I use my ecoflow smart plugs, there is no communication to the battery to call for more power. I can still see the plugs in the app and turn them on and off from my app, but the whole point of them is to use the battery power and not the grid.

Does anyone know if you can roll back to the last firmware the battery was using until ecoflow fixes there broken software?

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u/Internal_Sun_9632 — 15 hours ago
▲ 6 r/Ecoflow_community

Is EcoFlow sensitive to temperature? Safe to use outdoors or better indoors?

Hey guys, just wanted to ask real user experiences about EcoFlow power stations.

I’ve been using mine recently and I’m a bit curious about how sensitive it is to temperature. Like when using it outside (especially under the sun), does it overheat or is it designed to handle that?

From what I’ve read, EcoFlow units actually have a working range around -10°C to 45°C, and charging is recommended between 0°C to 45°C . So technically it should be fine outdoors, but I’m not sure how it performs in real-world heat.

Also saw some people say:

>

but others mentioned overheating when charging fast or using high load for long periods .

So now I’m wondering:

  • Do you guys use your EcoFlow outdoors regularly?
  • Does it get too hot under direct sunlight?
  • Is it better to use it indoors or in shaded areas?
  • Any tips to prevent overheating?

Would really appreciate your insights before I keep using mine outside 😅

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u/EmergencyDiligent894 — 22 hours ago
▲ 43 r/Ecoflow_community

EcoFlow 800W Setup (2 × 400W panels)

Picked up the EcoFlow system for £330 all in, now installed via a fused spur and dedicated MCB ( although you could just plug in in Europe) alongside my existing solar + Powerwall setup. (Fitted on my garden room roof)

Positives • Easy to get up and running – genuinely plug-and-play once mounted • Decent output for the size – consistently seeing ~0.5–0.9 kWh/day in mixed April weather • Works nicely as a top-up system alongside my main array • Cost vs output is strong – for the price, hard to argue • App is simple and gives a quick view of generation/savings

From the attached stats: • £8.19 generated so far this month • Daily earnings typically £0.30–£0.90 depending on sun

Rough Payback

Based on current performance: • Let’s say ~£0.60/day average (realistic UK blended) • ≈ £18/month • ≈ £150–£180/year

On a £330 spend including small discount: 2–3 year payback, likely closer to 2 years over a full summer cycle

Negatives • No panel fixings included – had to source separately which was a bit annoying • Customer service wasn’t great – slow responses and not particularly helpful • Equipment arrived slightly damaged (cosmetic) • To be fair, they did issue a small partial refund, but still not ideal out the box

Overall

For the money, it’s a solid little add-on system. Not a perfect experience getting it delivered and installed, but once it’s up, it just quietly does its thing.

If you’ve already got a system and want a cheap extra 800W, it’s a decent shout — just go in expecting to sort your own mounting and don’t rely on support.

u/Cool_Isopod6520 — 1 day ago
▲ 4 r/Ecoflow_community

Major loss of Capacity

Has anyone else noticed a major loss of capacity after the latest firmware update ? My Delta 3 isn't even a year old yet. Last night after a storm it had to run on battery power, I had it charged up to 100% preparing for a storm and it went from 100% down to 1% in about 40 minutes even with a load of only 25W. Thinking it was just a BMS calibration issue, once the power was back I let it charge, and it charged from 1% up to 100% this morning using a 200W charge rate but in only a bit under two hours, so less than half of the 1024Wh capacity.

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u/Friendly_Ground_51 — 1 day ago
▲ 12 r/Ecoflow_community

16 EcoFlow 125W bifacial modular panels wired 2S8P — overkill or the right mindset for longer outages?

This is where the solar side of my setup is at right now: 16 EcoFlow 125W bifacial rigid modular panels wired 2S8P.

The more I build around backup power, the less I think in terms of just battery size and the more I think about recharge capacity.

That’s really what this is about for me — building something that has a better chance of holding up once an outage goes past Day 1.

Still testing and dialing it in, but I’m curious what other people think:

- anyone else running these panels in a 2S8P setup?

- what kind of real-world performance are you seeing?

- do you see this as overkill, or just what it takes if recharge is part of the plan?

u/BuiltForBlackouts — 2 days ago
▲ 5 r/Ecoflow_community

Stream microinverter extremely low production

I recently got a Stream microinverter and live in a state where I am trying to take advantage of the new "balcony solar" rules per recently passed legislation.

My stream is up to date with the latest firmware.

I followed the simple instructions to set up; connect pv, plug in AC power, pair to mobile. Done.

I am using harbor freight 25W x 4 kit. When connected separately to a 12v LiPO charger, I see ~21v and ~3.5-4A .

So far, no matter how much I move panels or connec to different mppts, I see the output on the app jump constantly from 0w to 20w , or more typically 0-5w. The daily graphs show ~20 watts total for each of the last three days. What?

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u/nebbbben — 1 day ago
▲ 48 r/Ecoflow_community

New here — I care more about recharge than runtime

Hey everyone,

New here, but I’ve been deep into testing EcoFlow setups for a while.

One thing I keep coming back to is that runtime gets talked about a lot, but recharge is what really decides whether a setup holds up or not.

Anybody can say a unit ran something for a few hours.

What I’m more interested in is:

how it performs with real loads

how fast and reliably it can come back

how to build around longer outages instead of just Day 1

I’ve been testing different EcoFlow units, battery expansion ideas, and recharge approaches to see what actually makes the most sense in real use.

Looking forward to learning from the group and sharing what I’m seeing along the way.

What’s been the biggest real-world lesson you’ve learned from your EcoFlow setup?

u/BuiltForBlackouts — 3 days ago
▲ 3 r/Ecoflow_community

Ecoflow double voltage hub or Pecron double voltage hub?

I’ve got two Delta Pro’s. I want to get a double voltage hub. Does it matter which one? They both do the same thing on paper. It looks like the cables are longer for the Pecron, and it has mounting holes on it. It’s also a little cheaper.

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u/Embarrassed-Main6138 — 1 day ago
▲ 1 r/Ecoflow_community

Got a second Delta pro. Can I just get a splitter and charge it off the same solar pannels?

I’ve had a Delta Pro with two extra batteries for a little while now. Since Hurricane Helene hit, I decided I was going to add to it. For now, I just got one more Delta Pro. I plan to connect one of the two extra batteries to it. I have 1400 watts of panels that was charging the original system. Can I just get a splitter and run the new generator off the same panels? Or would I need to make half the pannels power one generator and the other half power the other?

I know 700 watts isn’t much per generator. I will add to it at some point in the near future.

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u/Embarrassed-Main6138 — 2 days ago
▲ 3 r/Ecoflow_community

Powering up Ecoflow stream for pre deployment on benchtop

Hi all New here

I have two Ecoflow Stream micro inverters(US Spec)

I unboxed them and plugged them into known working 120v outlets to see if they power on and to see if I can App connect to them through Bluetooth.

I have not hooked any solar panels to them as I was just looking to configure first then deploy.

Neither powers on with their respective or others power cord.

I see the LED lens but no red or green or flashing indications.

I don’t think I am a complete box of rocks but I cannot imagine two bad devices.

Thoughts and guidance welcome

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u/innuendostinks — 1 day ago
▲ 2 r/Ecoflow_community

Something is off - Stream AC Pro and Smart Plug

Hi everyone,

Maybe someone here knows what I am doing wrong.

I have 2x 460W solar panels on an ApSystems Ez1, that’s feeds into my Stream AC Pro.

The AC Pro feeds into my house.

I don’t use a smart meter but have set a constant

amount to feed into the house. Everything above this goes into the battery and the battery feeds into the house if solar can’t do enough.

In addition I have two Smart Plugs from Ecoflow that have been working when I tested it. So if the smart plug is used, the AC Pro will send more than the set amount into the house.

Today I noticed two problems:

1: the battery sends more than the set amount into the house (150W instead of 110W) at night.

2: the battery does NOT send more into the house, when a smart plug is used (picture attached).

Anyone has any ideas? The smart plugs are connected to the system/room in the app and used to work.

Thanks for your help and ideas.

u/MrMoehre11 — 1 day ago
▲ 5 r/Ecoflow_community

You Can be Unconventional Supporting 220w Portable Solar Panels

This was originally posted in the EF Forum in March of 2026:

Especially when first starting out with solar chargeable stations and solar panels, many people are stumped by how to support folding solar panels. When I first received EF 220w bifacial panels (OG), I was at a loss. I couldn't get the "stand", which was the casing, to work for me. I'm fully aware and cheerfully admit I'm a spaz, and other people find the stand works wonderfully for them.

Let me tell you, you CAN be unconventional and use material you have on hand. You don't even have to be handy - I am sooooo much better at taking things apart or doing demolition than I am at building/putting things back together. Sure, purists will tell you that your solution, "is not efficient", or some version of, "you're not doing it right," or "that's not how it's done." If they give you good ideas you can implement - great! If you are doing what you can at the moment, under your particular circumstances, with what you have, that is also great.

At first, I tried laying the panels on the grass (and got comments about that - even if the manual actually says you can lay them flat), but the panels burned the grass, so I had to come up with something better. I tried various materials I had laying around, but they didn't work as well as I would have liked..

The best solution I have found is not conventional, but it works, is easy to move, doesn't kill grass, and takes advantage of some potential solar collection from the back side. It also takes advantage of things I already had - outdoor clothes drying racks.

I was charging a Trail 300. I can't use the panels that are mounted on the shed roof because the VOC is over what the Trail can handle. I also use this regularly for a River 3 Plus. It is easy to move with the panel on it, and I can leave it outside during my solar collecting season.

1st pic shows the panel collecting sun, 2nd pic is of the Trail charging. 3rd pic is of the panel and rack folded ready to move, 4th pic is of it under the eaves for storage

u/BogiebEF — 15 hours ago
▲ 4 r/Ecoflow_community

Short video of my backyard panel setup.

This is really about recharge capacity — building a setup that can recover better when outages go longer.

u/BuiltForBlackouts — 1 day ago
▲ 5 r/Ecoflow_community

AC Stream Pro dead after 1 month, ignored by support

Hey,

just my current experience, i have 3 Batteries (1 Ultra + 2 AC pros). One died over a week ago with the error "Bus softstart error 556". Nothing really works here, no restart oder removing and adding it again, nothing.

So i send an email to the eu support of ecoflow .. over a week ago, nothing, tried with different emails . .nothing besided the initial automatic response. I bought it directly from their own store as well.

What a sh** show~

u/Clanver — 2 days ago
▲ 2 r/Ecoflow_community

Delta 3 Plus + its internal MPPT -> 800W plug-and-play solar

I was looking at getting a Ecoflow Stream microinverter but saw that the Delta 3 portable batteries have their own MPPT controller in - I wanted a camping battery too so I wondered if you could configure the Delta 3 Plus with 2 x 450W panels and have, in daily use, it export any solar to the grid (800W max) - e.g. the same as an Ecoflow Stream would do - whilst keeping the D3Plus internal battery at a reasonable state of charge (80%?) so I can unplug and take it camping every once in a while?

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u/hakkapin — 1 day ago