EcoFlow Delta Max Portable Lithium Power Station Review

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Luckily, I’ve had a chance to try out and review several portable lithium power stations throughout the last couple of years. I’ve tested various Jackery, Himcen, Bluetti, and Lion Energy offerings.

In the comment section of these videos, I’d often hear about another lithium power station maker called EcoFlow. Several people even asked if I could do a review of one. So when EcoFlow contacted me recently asking if I would like to test out their Delta Max power station, I replied yes. The specs look fantastic, and I was interested to see why there is a good buzz around their products.

For the EcoFlow, I’m planning, as I did for the Bluetti AC200P and the Lion Energy Safari ME, to split the review into three videos. First, up will be the intro and features, then an in-depth video testing the power station charge/discharge and power capacities. And third, a real-world review using it as we boondock around the USA desert southwest this winter.

EcoFlow Delta Max Review PT1 – Introduction and Features

PT 2 – In-Depth Demos and Tests + 400W Solar Panel

In this second of a three video review, I perform in-depth testing/demos of the EcoFlow Delta Max portable power station. First, I test the battery capacity using the AC inverter output. Then I try a fast charge test using my 2000W gas generator for power. Next, I try to power multiple appliances in our RV, including our 13K BTU air conditioner. The video finishes with a brief look at EcoFlow’s 400 watts folding solar panel and a pair of solar charging tests.

After several weeks of dry camping tests, I’m pleased with the Delta Max’s performance and ease of use. Stay tuned for a third video next month, where I’ll give my final impressions and a complete list of pros and cons as I see them.

Pt3 (Conclusion) Likes & Dislikes after 2 Months of Boondocking

In this video, I’m back after two months of off-grid camping with the EcoFlow Delta Max portable lithium power station and the EcoFlow 400W folding solar panel. I go through all my pros and a few cons as I see them for this power station. Overall I’m pleased with the performance of the Delta Max and now consider it my favorite portable power station that I have ever tested.


  • Super Fast Charging up to 3600 watts
  • Simultaneous AC & Solar Charging
  • Set Charging to Different Speeds
  • 2400W (5000W Surge Inverter)
  • Smartphone App
  • Expandable Battery Ports up to 6048Wh
  • Fairly Quiet Fans
  • Small Size and Weight
  • UPS Feature 30ms
  • Built-in AC Supply
  • 3400W Xboost Feature


  • Short Battery Lifespan 800 Cycles
  • No High Output DC Port
  • Overseas Company
  • All Eggs in One Basket
  • EPS vs UPS Functionality

Update: (EPS 30MS vs. UPS) Causes Power Glitch for iMac and Starlink

Just a quick review update for the EcoFlow Delta MAX portable lithium power station. I’ve discovered a minor glitch to it that showed up while I was boondocking this past week. Its EPS “Emergency Power Source” functionality has a 30 milliseconds delay. This is long enough for our iMac computer and Starlink Internet Dish system to reboot when I power off my generator after recharging.

Review and Demos of the EcoFlow Delta Max portable lithium power station and 400 watts folding solar panel

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