As the powerhouses of EcoFlow, the DELTA series was designed to meet the energy demands of road trips, boondocking, skilled labor, home backup, or whatever you want to throw at it. With capacity starting at 882 watt-hours all the way up to a mind-boggling 25,000 watt-hours, the DELTA series is all about dreaming first and planning later.
The smallest of the DELTA series fits about anywhere. Works great for simple solar setups and outdoor events.
•Essential electronics during a blackout
While all of the power stations in the DELTA series can power your home appliances, they differ on how many and for how long. If your only goal is to keep the fridge running for a few hours while having the option to run a few other things, then DELTA mini can do the job. If home backup for you is nothing short of continuous power when the grid fails, then DELTA Pro is the way to go. It can power your home’s outlets, light fixtures, and hardwired electronics through our optional Smart Home Panel. With add-on battery packs, you can likely sustain your normal energy consumption through a blackout.
Portable power stations are replacements for gas generators in many, but not all situations. If the grid is down for a really long time, a gas generator may become a last resort for power. But don’t expect EcoFlow to just push out some run-of-the-mill gas generator; it’s smart, efficient, and user-friendly. It recharges DELTA Max and DELTA Pro without wasting energy going from DC to AC and then back to DC. Even better, it turns on and off automatically when it reaches a certain battery level. Read more about why gas generators aren’t completely out of the game.
We tested how fast our in-house solar panels could recharge our portable power stations from 0–100%. The minimum value in the ranges below are the fewest panels you’d need to get a full charge in 8 hours of sunlight. Note that fewer solar panels may be required if you:
•Charge within the recommended 20%–80% battery level range
•Use them on a colder, cloudless day
•Have more than 8 hours of sunlight
•Adjust the angle of the panels frequently
The maximum value in the ranges below are based on how much solar input each portable power station can handle, and exceeding the maximum can damage your unit.
OPTIMAL NUMBER OF SOLAR PANELS
Yes, to make our portable power stations as universal as possible, we made the work with any solar panel that has MC4 connectors or XT60 connectors. Note that it still needs to have the right voltage and amperage. If you’re plugging each panel to the one next to it (series connection), add up the volts on each panel and compare it with the voltage ranges below.
If you’re wanting to connect in parallel, you’ll need to add up the amps (not volts). The maximum is 10 amps for DELTA mini, DELTA, and DELTA Max and 12 amps for DELTA Pro. Parallel connections are probably only feasible for two panels.
DELTA was the first in this series and preceded the EcoFlow app. The app offers features like setting the battery use range (e.g., 20%–80%), adjusting the recharge speed, and monitoring your usage remotely.
NCM versus LFP isn’t so much a debate as it is a preference for how the battery will be used: NCM is better for portability and LFP is better for lifespan. We see DELTA Pro being used daily for home energy management, which uses more cycles. It only made sense to give it a battery that would last longer despite being a little bulkier.