Review EcoFlow Delta Max

Review EcoFlow Delta Max – The Delta Max is basically a bigger version of the Delta 1300, with App control, extra batteries (which I didn’t test), and a few refinements like a manual “Quick Charge” switch on the unit itself. I actually like it a lot. If I was comparing the Delta 1300 and the Delta Max I’d be looking carefully at the price per kWh but I’d be generally inclined to get the Delta Max if I had to have just one power station.

Review EcoFlow Delta Max

I really, really like the new features on the Delta Pro (which I also didn’t test) but the 100 lb weight makes it too much of a fixed-in-place unit for my overall needs: camping, emergencies, running power tools in the back yard or around my car, etc.

The MAIN reason I like the Delta Max is it’s powerful enough to do whatever I want to do with it for a lot longer than my Delta 1300 and I can still move it around fairly easily. For me, my main criteria for how useful a power station will be for me is how long it will power my refrigerator.

Delta Max Specifications

I’ve got an old GE Refrigerator FE GSL25IFRF BS. When the compressor OFF it didn’t really draw any power (unless the door light was on). With Compressor ON it drew: 111-152 Watts but that only occurred about 15 minutes per hour. It was averaging about 80-85 Watts per hour.

The 2016Wh Delta Max powered this refrigerator for about 19 hours on a single charge with no solar or grid input. For comparison, my Delta 1300 would run the fridge for about 10 hours. Charging the Delta Max from 0% nominal to %80 took about 90 minutes. Topping up to 100% took another 110 minutes.
Charging the Delta Pro 0% to 100% consumed 2,360 Wh of Grid power according to my Kill-O-Watt meter.

Delta Max Capacity is rated as 2,018 Wh. Discharging the Delta Max 100% to 0% output 1,820 Wh according to my Kill-O-Watt meter. So, output-efficiency, the energy used to divide by the rated capacity is 1820Wh/2018Wh ~= 90.2% and round-trip-efficiency on the Delta Max is 1820Wh/2360h ~= 77.1%
I have to say, I haven’t had time to run this test again with the newest Firmware. I’m hoping I can do that this afternoon.

Using four 110W Ecoflow Solar Panels in series, with panels set at ~45° inclination facing south –
On a sunny day with a slight haze, the Maximum Wattage from the panels at Solar Noon was: 371 Watts.
I was able to charge the Delta Pro from 0% nominal to 100% using this solar setup in about six hours.
With this setup, I was able to run this refrigerator without grid power for three days before I concluded the test.

I figure, if a blackout occurred during several days with cloudy skies, especially in winter with longer nights and shorter days, the Delta Max would probably run out of juice in less than three days running my fridge.

I really WANT to get a Delta Pro and Smart Home Panel during the KS Launch – for the automatic UPS service, the LiFePhos4 battery pack, and for the Bluetooth App Connection. However, when I detail my real needs for power stations, just supplementing what I now have with a single Extra Battery for the Delta Max might be enough.

A 2015Wh Extra battery, plus my Delta Max would probably power my fridge for around 6 days – maybe indefinitely if I add more solar panels. The Delta Max has NCM batteries with a much shorter life cycle than the LFP batteries in the Delta Pro. So, I would NOT keep a Delta Max setup plugged into grid power all the time as an Uninterruptable Power Supply. Since my computers are all laptops, I don’t really need UPS.

I still love my Delta 1300. At 31 lbs, it’s about the perfect size for me for car camping. I did take the Delta Max for two overnight trips in my van and I found the size and 50 lb weight to be a burden. I do think the capacity of the Delta Max would be perfect for an RV trip, with more than three people, with more equipment, for more than a single night.

We had a blackout recently and I found it very convenient to have multiple power stations throughout my condo: Delta Max running the Refrigerator and incidental kitchen appliances. Delta 1300 powering my router lights, computers, etc in my living-dining room area. R600 Max running bedroom lights, BiPap Machine, etc. It was a bit of a shlep to position everything, layout folding solar panels and layout MC4 cables.

EcoFlow DELTA Max

EcoFlow DELTA Max

Price: $2,099.00 $1,899.00

The EcoFlow DELTA Max is the next leap in portable power technology, offering you power security and independence, wherever you are.

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Credit: Christopher Loye

• EcoFlow DELTA Max – Early Bird Price: $1,699
• EcoFlow DELTA Pro – Early Bird Price: $2,699

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How To Buy EcoFlow Delta Max

1. Firstly, make sure that you’re logged in to a Kickstarter account. If you don’t have one you can set one up here.
   (Please note that guest pledging is no longer possible. You will need to either be signed in to your existing Kickstarter account or create a new one.)
2. Go to the project EcoFlow DELTA Pro: The Portable Home Battery to support and click the green “Back this project” button on the page. Alternatively, you can scroll down to select a reward tier. If you don’t want a specific reward, select the “Pledge without a reward” tier at the top and enter your desired pledge amount. If your reward involves shipping, be sure to select the appropriate country from the drop-down menu and click “Continue” to proceed.
3. On the next page, you will have a chance to confirm which reward tier you’d like to pledge to and add some bonus support too if you’d like. After you’ve confirmed your reward tier, click the green “Pledge” button.
4. If the creator has created add-on rewards for their project, you’ll have the option to add these on the next page. When ready, click “Continue” to go to the payments page.
   (Please note: If the main reward tier selected is digital, physical add-ons will not be available, and clicking the green “Pledge” button will take you to the payments page.)
5. Here you’ll be prompted to enter your payment details. To complete your pledge, click the green “Pledge” button and you’ll be all set!
   (Please note that it’s not possible to split a pledge between multiple credit cards. You’ll need to provide one credit card per pledge.)

You should receive a confirmation email to confirm that you are now a backer of the project. If the project is successfully funded, your card will be charged when it reaches its deadline.

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EcoFlow Delta Pro 3

MSRP Price: $3,699

A single source to power almost all of your essential home appliances. Power high-demand appliances—from 3 ton * central AC to 1 HP water pump—with robust 4000W and dual 120V/240V capabilities.

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