EcoFlow Delta Max - Things You Don't Hear In Reviews

My review of the Delta Max after a month of use. This video is not about technical testing. It's an overview of the spec, the good points but most importantly, the bad stuff that many reviews don't cover.
🛒 Check Price on Amazon - geni.us/deltamax
I'm a big fan of this product, and there are many of you out there that will definitely be able to live with the bad things I talk about in this video. I wanted to focus on the bad because I have watched a lot of reviews on this product, and they tend to be full of praise. A lot of the time, one can only feel that this is because they have been sent a product for testing by EcoFlow.
I bought my own. I'm using it to power everything in my office and studio at home. This isn't a typical use case, and there may be better solar products and batteries that would better suit my use, but I hope you still find this insight useful.
00:00 - Introduction
00:33 - Delta Max Capacity
00:59 - Power Outputs
01:53 - Power Inputs
03:20 - The Bad Points
12:16 - Final Thoughts
Thanks for watching, and let me know in the comments what setup you have to help remove your reliance on the grid.
#ecoflow #deltamax #review
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[@tdcattech]

If you're interested in whether EcoFlow have improved the noise on the Delta 2 Max - kzbin.info/www/bejne/h4m5moWfrpeegKs

[@iggyguy88897]

Shit. That's me back to square one . Can't have that noise, in a van converted in a camper and its seems unrefined and over priced, for what they are given. Thanks for the honesty. Saved me from been pissed off .

[@tdcattech]

Yes. It seems that people are very torn on this. If you're camping and you can put it in the back of a car and just feed a cable out, you'll be fine. Equally, if you're pulling hundreds of watts, expect noise. You're never going to avoid that with current tech. However, it can be loud with fairly low draw which is a problem for me personally. It is otherwise a superb device 👍🏻

[@keithcress1335]

I also really liked your very clear and thoughtful review. You brought up several points that I wouldn't have recognized until I was using one. Thanks!

[@tdcattech]

Glad you found it useful. As I said in the review, it's a great product (that I still use every day) but there some things to watch out for that EcoFlow are never going to promote in their sales pitch.

[@regtitch5200]

THANKS FOR THE NOISE! REVIEW. I WAS SERIOUSLY ON THE VERGE OF BUYING THIS MODEL FOR MY VAN SET UP. NOT NOW!

[@tdcattech]

The new version of this is considerably quieter.

[@CampingSecretsUK]

Great review. I recently reviewed the Delta 2 and those fans are still pretty noisy. Love your style! Have subscribed!

[@32_bits]

Very interesting and informative video, with your open and relaxed style you could easily move to television presenting. This is the first none biased video on the new Delta range and the fan noise is barely mentioned in other reviews. I am considering the Delta 2 and it's not hard to assume it has the same issues, ideally when considering the price, it would be good to see and hear one before buying. Will subscribe and check out your other videos.

[@lerryn4837]

1st HONEST review I have watched...Thank you

[@AriD2385]

Thank you for noting this. The sound issue would make a huge difference to me, and as I was leaning toward EcoFlow, I'm glad to have this info.

[@tdcattech]

Worth noting that they have made a massive improvement with the Delta Max 2. It’s over 10dB down on the Delta Max.

[@AriD2385]

@@tdcattech Thanks, good to know!

[@hardtruth2039]

So glad we waited and bought the delta 2 max and extra batteries.

[@sergiosarmiento9029]

Hi. I have both a delta (not max) and a delta pro. I agree with you in respect of noise. I do not have problems with the solar when leaving it connected all the time, nor do the units make any noise while trying to connect. But lets be honest I am in Spain and in most cases sun is not an issue here. As for switches to the AC plugs I use remote operated plugs and that with one remote allows me to switch on and off several devices. Thank you for you review!!

[@ES-mq9ox]

Sorry for the long winded comment, but here it goes anyway .... First off - Wow, that is an impressive review video right there, very high quality and good, honest. unbiased information. Thank you! .... But, unfortunately it also confirmed my suspicions/worries about whether or not the Delta Max was going to have those same loud noise issues that the new Delta 2 units have. Hobotech & multiple other dissatisfied owners have already confirmed that fact for the D-2's.... Darn - after I cancelled my recent Delta 2 order (primarily due to the noise concern) my first thought was to wait for some price reductions, and then buy the Delta Max 2000 instead. I don't think so now. And the other thing that caught my attention in your review was the solar panel connectivity issues when it's left plugged into the panels overnight. I had seen that that was an issue with the Anker 757, but had never heard of it being a concern with any of the Ecoflow products. I have a Delta 1300, and it does not have that problem that I'm aware of. It starts delivering even very low amounts of solar (5-10w) to the power unit as soon as the morning sun hits the panels, w/o any interactions from myself whatsoever. And lastly, my Delta 1300 appears to be far less noisy (approx. 40 db when I/O loads exceed 200w) than either the Max or the D2 @ 60-65db each. As a result of all this, I am now strongly considering adding a 2nd Delta 1300 to my arsenal, and I'm also thinking of it's lack of app connectivity as somewhat of a merit rather than just as a liablity. Thanks again, and good luck on all your endeavors.

[@doubledeee]

Thank you very much for this review! I like your presentation skills.

[@billienomates1606]

Good review, just bought one for the possible impending blackouts.

[@mygtr2021]

very important information, thank you for sharing..

[@FelixDaleth]

Fantastic review, thank you very much.

[@williamoneill5498]

So glad I saw this. Excellent review, saved me making an expensive mistake. The fan noise is beyond unacceptable, it would have rendered the Delta max next to useless for my needs. I will not be placing my order. Going a different road now. Many thanks for making this review, it was well balanced, told the good and the bad, the truth.

[@tdcattech]

Thanks for that. I think they make solid, quality products but if you want to use this in a quiet environment, this is not the one for you. Delta Mini is quieter (but not what I would call quiet) and the Delta 2 reports seem mixed around noise but I can’t really comment as I don’t have a unit.

[@williamoneill5498]

@@tdcattech I assume all of these Li Ion power stations or solar generators have very similar cooling requirements so fan noise is a big factor. Funny enough it is hardly mentioned in any of the main manufacturers "buy me" stuff. I might spring for a smaller capacity and much quieter Li battery unit, I am looking at power oak, but now that you have put us all staring, I am investigating the noise levels on everything first. Keep your eye on this sector because people want to know the truth and good reviewers will be in high demand going forwards. I suppose they will fix the fan noise in time, but the chemistry as it stands is what it is, temperatures must be kept down for safety. Last thing you want is a silent unit that burns the house down. regards.

[@tdcattech]

Absolutely. Moving power and converting voltages etc. is just massively inefficient and creates heat. Safety has to be first. I doubt EcoFlow will like this review, even though it's largely positive but I welcome your feedback! 👍🏻

[@williamoneill5498]

@@tdcattech This is the essence of a good reviewer, you never worry if the manufacturer likes or dislikes your review, so long as its professional, balanced and truthful, which your review absolutely was. EcoFlow know that the noise issue will put a lot off their products (like me), so they have a good incentive to keep the product safe whilst significantly reducing the aircraft hangar sound effects!

[@s.i.m.c.a]

When you need power during outages, there are no questions about noise. Same for fuel generators, compare their noise levels. but yes, some vendors now care about noise as well, for example Anker with their PowerHouse series.

[@IlluminatiSilver]

Great video. It’s also useful for charging other power generators while you are using your 100v solar panels to charge the delta max. This throughput charging allows lesser powered generators to charge while you charge the `delta Max at the same time.

[@rogiste1]

great job -- I like the fan example of fan noise -- it's true -- What if you go camping - I guess it will keep the bears away...

[@pa_maj.MARTINI-van-MAN]

A Good solid honest review 👍

[@christianheau1765]

Very informative and helpful. Just subscribed. Awesome review

[@Yukonjackman1]

Mine is being returned tomorrow under warranty on there dime today is Thanksgiving and i was treated great by them for my issue on this holiday.

[@CamperVan-K]

Totally agree about the noise and the App. It's horrid. Plus, it's very heavy and I haven't got the muscle power to keep lifting it.

[@otulp88]

This is the most useful video on power stations on youtube.

[@smikejennings1236]

Great info. Looks like a solar charge work around is needed. Some type of controller to cut in >30w and out

[@mikeerstad3705]

Good point on the use of the APP...and it's "discontinued use" down the road....never thought of that!

[@tdcattech]

It's a fair consideration because something like this could last you 10 years. 👍🏻

[@tbone45040]

awesome review! i just received my 2 DM2's & extra battery for each. nothing you said would sway me to bail. but useful info for sure! thanks!! am i incorrect believing that the units can be charged at an EVSE? i figured i could rotate them like you said.

[@romansh1357]

Great review

[@danielteegarden8982]

I have one. You hit all the points good and bad. Great work ! dan t palm springs calif USA

[@patpatpat999]

Brilliant! Exactly what I needed with respect to noise. I looking for a unit for a van-camper conversion. Also, noted that EcoFlow batteries use NCM battery technology. Most of the Bluettis use LFP batteries at a much lower price point. Any ideas what product may be the quietest? I'm building out a Toyota Sienna camper and my wife will be using a CPAP. I was hoping to enjoy the quiet of the outdoors, not the techno-noise of the indoors.

[@ahvram]

Well done. Thank you!

[@MrPaddy924]

Really useful review, thanks. I have just bought a Delta Pro and can say that the advantages and disadvantages you have highlighted here apply equally to the Pro. Overall, I like it, but have to keep it in my (somewhat dusty) tool shed because of the noise the thing generates which is less than ideal as I worry about dust getting into the device - causing issues later on.

[@jackbeardsley4182]

Which one did you get I’m about to buy one thanks. I do a lot camping would you it be good for that ? Thanks

[@daveanddodger5498]

I am thinking of using one of these in a van conversion. If the unit was inside a cupboard do you think you would still hear the fan nouse. Dave.

[@tlatoanimachi]

Your criticism will help improve the product. Thanks for your reviews. Ecoflow has the power kits now, and I would consider updating to that system for your whole home.

[@tdcattech]

To rich for my blood. Also, the portability is a huge bonus for me. I just don’t have the capacity, space or money for the Power Kits 🙁

[@liljasere]

All fair points for me personally the noise is too much for my use case it’s in my van that I live in full time having the fans fans running at full speed the majority of the day is horrible, if you are using this for back up power or camping you can plug in an extension lead and stick it in another room this is the reason for the difference in opinion on the noise I think I’m planning on doing a fan swap in a few weeks with will hopefully get it to the same noise level as the delta 2 but unfortunately it won’t alter the fan curve it’s self

[@gid1776]

Great review, I have been looking at these for a couple days and this is the first time that it being loud has really sunk in. The delta 2 is interesting, but I wanted to 2000w of the delta max. I was hoping to catch this sale, but now I don't know what I want to do....

[@tdcattech]

Mains inverters always need cooling but there are good and bad ways of cooling and shifting air around. These seem to be louder than the competition. Good product though.

[@HansKeesom]

I am fine with the fan noise when the battery is being used, whether it is charged or discharged. Cooling the battery is my highest priority. Having said that, when cool, they are cool. My biggest problem is when AC-in is connected and AC-out is used. If the Delta would have a real transfer switch it would have no need for so much cooling, instead they do some kind of AC->DC->AC chain which forces the fan to start cooling. I ordered a real transfer switch and will connect my Delta 2 to the generator connection of it. 150 euro for something EcoFlow should have build in. The solar input problem you might be able to solve my using a small separate 12 volt battery and a mppt controller that has a programmable load port. I use a Victron 75 15 to charge an external 12 volt battery and when voltage on that is high enough the load port is opened and stream electricity until a certain low voltage is reached. You don't need a large 12 volt battery for that and can also use the victron Victron BlueSolar MPPT 75/10 (12/24V) which has 10 amps output. Yes external battery's...... the are expensive and have no way to charge them or use them other then connecting to the main unit.... might as well buy another unit

[@justindaly499]

have to agree noise is an issue. i finish work about 2am each night and use it to power my office until 6am added a timer to the mains input so start charging from my houses solar after 9am i brought a plastic garden box lined it with car noise suppressing sheets take the edge off can watch KZbin or a movie with it in the room power was then the issue office uses 260w. so was getting about 5 hours (haven't done your calibration) so having a 48v lithium scooter battery i rigged up a 48v to 24v 20amp converter to the xt60 increase battery life to over a day may get the extra battery and the generator in the future if needs change but working fine for now

[@chrisj6190]

What DC load causes the fan to kick in? I’m hoping to run a 5amp / 60w load on 12V DC and it will be a non-starter if that causes noisy fans to run. Will be running a fridge in a camper van and I’ll be sleeping right next to it. Thanks!

[@kingred1665]

I have a ecoflow unit with the firmware for slower running fan and one without.Guess which one gets warm and blows warmer air?

[@bradkaral1188]

What models are the fans? There are huge variations in the noise levels of various types of fans, even at the same output level. Are they fdb (fluid dynamic bearing) type? Is there vibration isolation?

[@tsuehpsyde]

This review was great; thank you! Have you found any power stations that handle "passive" solar charging day to day? It seems most don't do this and it's what I am looking for in a power station.

[@xpanderxsert2613]

Thanks a lot for this review. I'm surprised about that noise. Its also loud if its used as UPS?

[@tdcattech]

Yes! This is one of the most annoying things. You would expect it to bypass heat generating stuff when in UPS mode (AC in and fully charged) but it still comes on all the time. The best product I have used for a true UPS is this on from Anker - geni.us/solixc1000 - Though this will still power up a fan when you hit 400-500W AC bypass. That's good enough for me though. As long as it's not making a noise at 100W AC, I'm happy.

[@xpanderxsert2613]

@@tdcattech Thanks a lot for sharing your experience. I want to have something for the summer seasson in very quite area and its improtant for me otherwise this will bring the hell to me :D

[@ProGuitarUA]

Will Bluetti AC200MAX or AC300 will perform better with all the concerns EcoFlow have ?

[@pixel-ink]

I bought one, and its not that loud to me. This machine is great.

[@tdcattech]

It’s so much louder than I expected but you’re right. It’s an amazing machine. It’s capable of shifting some serious power! 💥

[@jeshurun4616]

What’s interesting to me is this is the only video I heard making the noise such a big deal….

[@tdcattech]

EcoFlow has now got back to me about the minimum solar power issue. Apparently, the unit consumes 25-30W itself, so any solar input below this cannot be used. That seems a lot, but I guess it makes sense.

[@under2boots]

I'm thinking I need to keep the Anker 757. The fan sounds like a puddy tat purring in comparison too 🤷

[@tdcattech]

It is really noisy. There's no denying that. Safety is paramount but I really wish they could implement my 'Silent Profile' as discussed in the video. Some people say the Delta Mini is very quiet in comparison but I am yet to test that.

[@dino1604]

I saw a video testing the EPS on the new delta 2, and i saw that it was pulling in 50w while outputting 40 W. The 10W difference for the invertor/unit itself, i found very large. It would be kind of neglectable if you would use powertools and run the whole battery in like 2 hours or so (just losing 20 watts of the total of 1024 to just the unit itself) but I find it a shame if you would have a low powerdraw situation of 50 watts and it kicking in, and thus being a relative 20% of your consumption and thereby losing your potential of drawing 50watts for 20 hours and now the realistic picture being 50+10 for 16ish hours. Like you said in your video it would be great to have a limiter to not kick the fans on even above 80W, this should also be discussed to see the real WH you get out if it with this draw of power. (Excuse me my comment is based on the delta 2)

[@danielteegarden8982]

@@tdcattech Ecoflow Delta 1300watt....Buyer Beware ...It never stops charging. They don't return my e-mail. Concern that it might catch on fire. Have had it for 2 1/2 months. Think twice before spending more than $ 1,000.00 dollars. Besides I am afraid to leave it out of my sight that it might burn down my house

[@fomoerotic]

Have they gotten back to you about the fan noise issue as well?

[@Ponch_1776]

Anyone have any tips or ideas on how to keep dust and dirt out of the outputs? I was thinking of putting in those outlet socket plugs on the AC outputs but haven't thought of anything for the rest of the unit. Any ideas?

[@iampuzzleman282]

Does newer battery lithium ion fast, generate less heat and less fan noise? And how much energy does cooling the unit drain battery..? Thanks this is an amazing video I may buy the 2000

[@Bacnow]

You would be crazy to purchase a lithium ion battery powered generator at this point (unless you are looking to score a deal on an older model). LiFePO4 is the new standard and should be prioritized when selecting a new unit!

[@under2boots]

Not Delta max, but Delta 2 arrived today. Straight away I'm loving it vs the Anker 757. (12kg, not 20 kg 💪) Came 30% charged and leaving for Wales in a few hours. Charged it initially to 90 % in savagely quick time in 35 to 40 minutes on 1200 watts. It was really loud, but I didn't care as all I was bothered about was getting it charged before I go and I was in the shower anyway, then pottering about and packing up to go. Tried 600 watts, considerably quieter. Under load, also way quieter than anticipated . I plugged into solar as curiosity got the better of me. 187 watts going in in hazy sun. ANKER MAX was 160 in full sun. Happy to say completely silent taking in 187 watts. The fan did slightly kick in but I was up close and it was barely audible. Need to test if it takes in low 10 watts instead of chopping it off. Ap is brill realising WiFi and Bluetooth. Sorry to bore you, but I'm relieved... Extra battery and case apparently still on it's way, but I'm now sat in a vw camper, using it and glad to be happy with it so far👍

[@tdcattech]

Not boring at all. This is exactly the feedback I was looking for. The noise issue is so subjective and people’s tolerance for fan noise varies enormously but it’s great to hear that there is a quieter mode. My Delta Max is currently charging from solar at 60W (it’s grey and miserable here in Bristol) and it’s silent 😁 🎉

[@chrisjames7015]

Yes let me know the lowest level of solar the Delta 2 will accept. I often have 10w or so coming in and my current Anchor 535 takes in 6w 8w 10w solar no problem and over days and days it is useful. If the Delta 2 takes low level solar I'd love to know.

[@clivesquire6463]

hi i found your review while i was looking for an ecoflow power bank we have a narrowboat so it would come in handy when we are out cruising ,but at home i have an xtool laser [120.watts ]i think its output is and a macbook pro for the software would this be suitable as i am hearing negative reviews from people saying that they need constantly charging as the unit discharges quickly [i guess it depends on what you plug into it ]so any info would be usefull as you seem to be using yours daily also things like toasters kettles air fryers have you tried these things please , take care stay safe , thanks.

[@americandude3825]

Really loud to me is my husqvarna backpack blower screaming in two stroke. My 8000 watt generac is quite loud. The delta max does sound loud, thank you for sharing that. I haven’t heard it mentioned. Sort of reminds me of a big bathroom fan maybe? I’d just leave it in the garage or other room and run a cord from it to my appliance haha.

[@tdcattech]

Yes. There are ways around it and for many people the noise will not matter at all but it's worth being aware of so you can make an informed decision. That's my job 👍🏻.

[@under2boots]

Now I'm stropping about loud fan noise on the ecoflow. The Anker is pretty quiet even if 1000watt charging it. I want to carry on with about 180 watt solar which might keep the fans to a minimum without 1200 watt mains making it cry?? I get you can adjust the app to charge at lower wattages. I agree that in winter my 180 watt solar will significantly drop. All I want to do is minimally power my working from home, broadband router, a bit of led lighting and a couple of monitors with a surface pro hooked up for an 8.5 hour day. Is this too much to ask 🤷🤣

[@teslanikola7000]

I love my Delta 2000w fan and all. I never thought about the noise until I saw this review. Charges very fast when needed. Probably better on the battery if one uses it when is an emergency. Combines with 2x 220 bifacial panels and a 2200w propane generator. Bring on the hurricanes. Ecoflow thought of everything. I encourage you to look at other reviews before you walk away from this.

[@tdcattech]

Not sure if this is directed at me personally but I am certainly not walking away. It’s a great, solid product. These are just some things people should be aware of. I actually charge a smaller battery from the Delta Max and use that when I need silence. The Delta does the heavier lifting.

[@teslanikola7000]

@@tdcattechabsolutely not directed at you. Just my respectful opinion. I thought it was a good review and I am sure it took much time to put together. Thank you.

[@TychoKingdom]

I can't really tell how loud it is but they sell ear plugs so I'm not bothered. Rather have some noise and solar power than quiet and no electricity.

[@life551]

Thank you

[@Marco-ls6ou]

Good Job! I been seen a lot reviews about those products where people are going way beyond their Wattage capacity to "prove their running power ability". In other words. This people are abusing those products specification just get viewers hits and likes on You Tube!

[@user-gl1lw3ev4n]

Hi Im live in a Barge in Uk .Ive got all ready solar Panels with battery Bank.Im thinking to by the Ecoflow 2000 .I was wandering if you can use in parallel with solar panel and charge my Lesure battery is well.Anyway great video

[@tdcattech]

Others may know better but I don't think that would work. The EcoFlow has an MPPT controller on-board. I would imagine that connecting another battery or controller up to that would mess things up. You could, of course, just charge your leisure battery from the output of the Delta Max but that would be less efficient. I often do something similar but not with a leisure battery.

[@FredRose2001]

Thank you for this information, I have been looking at these all in one power supply options, but I have come to the conclusion that for me (in a mobile application) that a setup with separate components is a far better option, solar panels that are connected all the time/ mppt solar charger/ 240v battery charger / 2000Ah lithium battery / a generator when needed / inverter. I run on solar all day and batteries at night, with this setup I can charge out each component as required, I don’t need any firmware updates ever, also my smartphone and iPad I carry in a faraday pouch (eBay), so big brother tracking is avoided. But the worst thing about all of there’s all in ones power stations is the OUTRAGEOUS COST and don’t even talk about trying to get any sort of warranty or repairs. P.S. with this setup it is costing about £300 a year for petrol, stuff being connected to mains power 🤪.

[@darren4943]

I completely agree about the fan noise, I emailed Ecoflow asking them if it was possible to control the fan or restrict the performance similar to what you asked them , they said it could not be done, I even moved the device from my office to another part of the house to get way from the noise, in the end I sent it back as its just to loud for my environment, I’ve bought a delta mini which is silent and I am waiting for the delta 2, hopefully it doesn’t have the same fan noise issue.

[@tdcattech]

That is a real shame. It's fantastic to hear that the Delta Mini is quiet but it's also much less capable than the Max. I do hope this is improved in the new higher power models.

[@wxmdragonz]

Delta 2 is very noisy too.

[@tdcattech]

Yes. It seems as though nothing has changed on the Delta 2. It's just as noisy from what I've seen on other vids (I do not have one to test).

[@darren4943]

I've received by Delta 2 and it is much quieter, the trick is to charge it at anything below 900w, anything above that will put the fans on but nothing like the noise the Delta Max makes.

[@badhabit6140]

Been using delta max in my home office with a number of computers conected to it. The fans are alamost never on, only when its charging whicb is like 30min long and only once a day max. Can confirm, fan noise is not a problem at all for me

[@jpmo82]

hi, you say solar charger is limited to 13 amps, but if you see the rear cautions says max 100v 10A, mine is a delta max and thats the same label, is anything we dont know to can go to 13 amps? thanks, regards.

[@geod3589]

You're the first review to mention noise... I guess that's why all the others are reviewed with it off. The extra batteries complete rip-off; you can buy an entire new unit for the price of a battery.

[@roedelkroete1]

that's why I got the Anker Powerhouse, better Battery and no noise!

[@stingk5295]

You are so Right, Too costly!

[@under2boots]

Just waching your take on this. Like you, I wanted to leave this hooked up to Solar full term and it charge without intervention every day. I just ordered delta 2 and a spare battery in favour of returning Anker 757 as this ends up with a clicking noise on dusk and needs unplugging and refuses to charge from sun up without unplugging the xt60 and plugging it back in again but will charge at even 2 watts of a grey day. Am I wasting my time you think if the eco flow won't charge unless its getting at least 30 watts of solar?! What seemed clear is becoming a pain and more of a mind field than I thought. Your take on this would be cool... You also have me thinking should I have ordered 2 main units instead of the battery add on 🤷

[@tdcattech]

Gosh, I could make a video just answering this comment as there's lots to discuss here. In fact, I might just do that.

[@dino1604]

@@tdcattech If you have the time to test this, do you think you mind doing a test (just a mention in the video) on battery leakage through time? Like fully charging the device and letting it sit for a month to see if the batteries hold their charge. I wouldnt know if there is a standard difference or just a normal amount on lithium ion batteries. (once saw on a package of normale rechargable AA that stated there should be 75% left after a year of sitting on a shelf, discharging through time alone)

[@camporeviews2613]

nice review

[@meirsilver1522]

Can the Delta Max be used to power a refridgerator, or electric oven, dishwasher?

[@tdcattech]

Fridge, yes. Oven, depends. Our main kitchen oven uses too much for this but you could happily power a table top. Dishwasher, maybe. Ours uses 2.6kW during a heating cycle so that would work fine.

[@sergiosarmiento9029]

One question! Does the extra batterie have a solar panel plug? Or does it charge while the main one if being charged?

[@tdcattech]

No. The only input is the connection to the main battery. The charging is fairly sensible. The solar power goes into the main battery at e.g. 400W and it will split the charging so the Max will charge the spare at about 200W and itself at 200W.

[@LangylangZA]

hook up a smart plug to each AC outlet, where you want to control them individually

[@tdcattech]

Yes, I have done that for a few devices. Most smart plugs won't fit directly into the device if you try to use more than one but that's no problem. I actually lean more towards avoiding the mains inverter completely due to noise and use USB, PD and DC12V for everything I can.

[@PeaceChanel]

Thank You Everybody for All that you are doing for our Planet Earth.... Peace.. Shalom.. Salam.. Namaste .. 🙏🏻 😊 🌈 ✌ 🌷 ☮ ❤🕊

[@aggitravel]

Do you recommend getting the eco 400w Solar or sauce another brand for cheaper? I’m about to get the delta max but weighing up about either 200w or 400 w for camping.

[@tdcattech]

The EcoFlow solar panels are overpriced. What you get depends on the space you have but for the price of 1x400W EcoFlow, you can get 1.3kW of Renogy rigid panels. Clearly that would take up loads and f space etc etc but you get the idea value wise.

[@oooooooooooooooooo]

This is because NCM battery cannot operate over 45 degrees, so the unit tries to cold it down as hard as it can with fans.

[@liljasere]

The fans are only for the inverter / dc section the batteries are not actively cooled

[@hartleyhare251]

Hi. Forgive me, was this the original Delta max 2000 or the new delta 2 max 2000? Thank you.

[@tdcattech]

This is the Delta Max 2000. There is no Delta Max 2 yet...just a Delta 2.

[@user-xy1hh4bv8x]

Are basics operation needs app?

[@City-Bisquits]

I saw another review earlier today saying the EcoFlow DeltaMax 2400w was amazingly quiet ???

[@tdcattech]

The Delta Max 2 is much quieter. The fan comes on a little more often but it’s at least 10dB quieter by my measurements.

[@nickgallegos430]

Great points, especially that you need app. That always bothered me and no other reviews mention that

[@91lifetime23]

Ive been wondering this for a long time before buying it, i live in a apartment so im looking for something that doesn’t make a lot of noise, is the Delta 2 quieter?

[@tdcattech]

I haven't tested it but from what I have seen in other videos, no. There is little if any difference in this regard. I have since tested the Delta Mini. It's considerably quieter than this Max but it is not, as someone put it, "whisper quiet". The sound is very noticeable in a quiet environment.

[@01smb]

Was wondering if I could use it for a window unit air conditioner?

[@tdcattech]

The inverter would handle the power (even a 12,000 BTU air conditioner wouldn't need more than 1.4-1.5kW) but it wouldn't last very long. Maybe 2 hours max.

[@theaverageguy3884]

Will this work to run power to a DJ controller for playing out side ? I have a Pioneer XDJ-XZ controller.

[@tdcattech]

Yes. As it has a mains in, you’d need to use the mains inverter but it only consumes 41W so you could probably run the Pioneer for at least 24 hours (factoring in losses and inefficiency). If you’d want to run speakers too, you could but that would reduce your run time.

[@theaverageguy3884]

@@tdcattechThanks for taking your time to answer. Mains inverter is that included/integrated or do i have to buy that separately ? I have 2 x JBL 310 speakrs that runs on battery so that wont be a problem.

[@tdcattech]

Yes. The Delta Max has 4 mains outputs so you just plug it in and turn it on. You could run your whole setup for 8 hours+ from this (plug both your speakers into the mains too) but if you only want to power the Pioneer, a Delta Mini would do great and is much more portable.

[@theaverageguy3884]

@@tdcattech Thanks again for taking your time. Have you done a back check on how much power my controller and speakers use ? 😘

[@tdcattech]

👍🏻 Definitely. It sounds like a really good use for something like this so I was curious. The noisy fans wouldn’t be too much of a problem for you! 🙂

[@s.i.m.c.a]

about individual socket switching - just connect a power strip man....what is the problem?

[@tdcattech]

Agreed. I sometimes use smart plugs on them. That works quite nicely too but I just thought it would be a nice feature.

[@MrHsv123]

How’s the battery holding up as it not lifepo4 lithium ?

[@tdcattech]

So far, it’s perfect. I use it everyday but it probably only gets through a cycle less than once a week.

[@MrHsv123]

@@tdcattech Thanks .I’ll be cycling it everyday running aircon .But only charging it to 80%

[@Bacnow]

As a veteran of the 1st gen PS4 days, my Delta 2’s noise output is not that bad! But, then again, i only use it for car camping and emergency power outages!

[@tdcattech]

Would you put the battery in the car then to keep the noise down? I must admit that I've never used this in a camping scenario but it gets pretty quiet at night and this thing whirring up in a neighbours tent would be irritating, surely? 🤷🏻‍♂️

[@Bacnow]

@@tdcattech - Yes. I typically run it during the day to run/charge all my electrical needs. However, at night it is place in my SUV to power my ICECO fridge only! But, who knows, maybe that white noise ambience produced by those fans would lull me to sleep faster…

[@Kamikaze3557]

Just got mine today, my fans are quiet while fast charging, yours sounds like the fans are binding.

[@stevezodiac491]

If you buy a 'ring' model 12 volt dc to 240 v ac watt, low wattage inverter of a couple of hundred watts max output, from halfords, it still has noisy fans. What do you want it do work without overheating or be cooled, which will always involve fans ? A petrol generator is many times louder.

[@tdcattech]

I agree. Of course it's fine for most use but it would be nice if the output power could be capped to keep fan noise to a minimum. It really depends how you use this type of product.

[@JuJu-vj3bz]

I have the Delta pro and I like a lot of people store these things in the garage or basement by the electrical panel. Mine in the basement is no more annoying than white noise for me. There in my basement and with the fans running I could watch TV without really having to turn the volume up at all. Your recording of the noise is misleading because you probably had the mic right next to the unit. Compare this to a generator and most other units that put out this kind of power and I doubt you find anything much quieter.

[@mishanamithabkasiparsad124]

Does the solar charging cable come with the delta max ?

[@tdcattech]

Yes.

[@jacvanderspuy5618]

Not in South Africa

[@wildchildaffair]

Hang on a minute, the device draws power when solar is plugged-in but not charging?! I was hoping to have it plugged into solar indefinitely at my off-grid cabin. Will need to re-think this purchase...

[@tdcattech]

This is more of a problem when the batteries are already low. So if the solar input is e.g. 15W, the system will never shut down and might be using 20W just being on. This obviously leaves you with net -5W which isn't ideal, particularly if your batteries are already low. Official response from support is below. "After checking with the engineering team, the clicking sound is from the Internal buzzer. It is normal from what we know. However, we still recommend not using solar charging at night and on cloudy or rainy days, because when the unit is in a low battery and the current input power of the solar panel is very low, the unit will always be determined under charging status and does not shut down. Meanwhile, the consumption of the standby power is higher than the input power, causing the battery voltage to leak and affect the battery life. Currently, we don't have a solution for this unplugging problem, but I will send your case and feedback to the R&D team again."

[@jacobpetersen5662]

Just got the Delta 2 Max and BOY is it quiet. You barely notice it... and it's easily background noise. They've come along way.

[@tdcattech]

Very true - kzbin.info/www/bejne/h4m5moWfrpeegKs

[@timetraveler2518]

I will purchase EcoFlow Delta Max because it is portable, versatile, and has enough wattage to support almost everything. It is much cheaper and lighter than Ecoflow Delta Pro. It is also expandable. I will put it on my time machine for my backup power. It will crank the power to time travel. A noisy fan from EcoFlow Max helps to deter sabotage from intruders. If the case of a mishap disaster when I am stranded somewhere in a time and place, the EcoFlow Delta Max solar generator with solar panels will be my lifesaver. It helps me to escape alive from the nightmare of the Twilight Zone! 👍🤣👍

[@tdcattech]

Sounds reasonable. 🤪

[@dscotia]

Have you done the "10 second press" at anytime? I have found that the Ecoflow really doesn't know what charge it has!

[@tdcattech]

I haven't heard much about that but will investigate. The percentage on my Delta Max is a complete joke. I've calibrated it multiple times and that does seem to work. However, when I've used it for a few days (recharging partially from solar) it just drops back to total nonsense. I have run my gear for over 24 hours on 1%!!!! It has no idea where it is. I don't expect perfection in this regard, but some idea of power remaining would be nice.

[@siroezhkina5865]

@@tdcattech it’s good that it runs at 1% (even though the display is misleading). My Delta Mini seems to be shutting down according to this ridiculous time remaining. With 882 capacity it turns off in about 3 hours with 60-100 watts output. I’m very frustrated and dunno what to do😢

[@johntheman9882]

What's the difference between the 1600 and the 2000? is it worth it?

[@tdcattech]

Depends if you want the extra 400Wh of capacity. The 2000 also has better battery cycle life (800 cycles vs. 500) and a slightly better inverter (2,400W vs. 2,000W).

[@johntheman9882]

Thanks, that's what I needed.

[@josephdonnaway5755]

Oh, it’s not really that loud. I use a Delta Max with two extra batteries inside my Airstream travel trailer to power all appliances except aircon.

[@davidrumbelow]

Are you in Usa😮as South voltage different

[@gabrielirlanda]

Good review but it is old now, they have improved the noise issues among other upgrades, watch Todd Parker review for those that are interested in this unit.

[@tdcattech]

It’s much improved on the Delta 2 Max but this model remains the same.

[@kirbyman1kanden7pf]

the Bluetti AC200 and the Bluetti EB200(MillerTech rebranded) are quiet, original Delta 1300 is loud, Anker Powerstation II 800 is quiet, EcoFlow River 412 is quiet

[@Dave-sx3rv]

which one would you get the delta max or delta 2

[@tdcattech]

Delta 2 unless capacity of the Max is needed.

[@Dave-sx3rv]

@@tdcattech 👍

[@badhabit6140]

Time estimates is off by about 30min for me, depending on load. On low power load its wothin 10min, on my big computer while gaming, its off by 30min

[@tdcattech]

Do you mean time remaining? If so, I’ve never seen a battery of this type do that accurately with the exception of the Anker Solix batteries.

[@badhabit6140]

@@tdcattech yea on the time remaining. I'm from South Africa so we use it for something called loadshedding, where the government has scheduled blackouts every day. Around 2 to 4 hours at a time and around 2 to 4 times a day. So this thing is keeping all my work equipment and WiFi up during these blackouts. I also had my fridge plugged into it before I moved. The battery accuracy with all my computer's off and just the WiFi and fridge on, is within 10 to 15min time remaining before it goes out. And with my computer's on its about 30min to 45min off. It's also only loud when its charging right after loadshedding and if the day didn't have any, it's only loud for like 15min a day as it just keeps itself topped up. I also have it set to not charge more than 95% and not go lower than 10%

[@si12volt1]

odd my fans on my max arent loud at all when they are on

[@tdcattech]

It’s all relative as I’m not giving a dB reading at 1m. They are so much louder than I expected for a device designed, in part, for e.g. night time medical equipment use. Where are you using it? Is it in an area that already has air conditioning units or similar?

[@BootlegEL]

This was a really honest review or you are a enemy of the company❤

[@blukahunas]

Bro, I just received mine opened it very excited and plugged it in to charge it up. I thought I received a damaged model or something it's so loud while just freakin charging. Like who wants to hear that loud fan when only charging? Sorry but I'm sending it back tomorrow.

[@tdcattech]

You’ll always need some cooling on a device using nearly 2kW to charge (assuming it’s set that high). I mean, it’s enough to warm the mains cable! 🙂 The problem is the cooling is so loud and it’s always there even at much lower charge rates.

[@Anees-]

Isn't it possible to use Bluetooth to use the app?

[@tdcattech]

It's possible to use it by connecting directly to the EcoFlow (so the EcoFlow becomes the Wi-Fi access point) but this still requires an app. It requires it to support current operating systems and exist on the app store.