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EcoFlow Delta 1800 Review

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Small, portable power generators are great for camping trips and small stuff, but when you need to power a motorhome or major appliances, a wimpy rechargeable generator just won’t do. That’s when you turn to a unit like this one. It has tons of capacity and key features essential for safely powering high-draw devices. This EcoFlow Delta 1800 review will examine the positives and negatives of this large-capacity rechargeable power generator (>>> Buy directly from Ecoflow).

EcoFlow Delta 1800 Review of Specifications:

EcoFlow Delta 1800
Wattage3300 Watts
Item Weight30.9 lbs
Item Dimensions LxWxH15.7 x 8.3 x 10.6 inches
PriceFind on Ecoflow.com

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The Delta-series are the flagship designs by EcoFlow and are some of the most well-respected products in the category. This model boasts a continuous output capability of 1,800 watts and provides an advertised 1,260 watt-hours to keep your appliances running for longer. It will even handle a surge of 3,300 watts, so it has the capability to run things like a table saw that has a high initial draw.

Output Options

The Delta 1800 is intended to power lots of devices, but really focuses on providing power for AC devices. It offers six two-prong outputs for plugging in up to 1,800 watts of consumption at a time. It will handle refrigerators, hair dryers, coffee makers, even construction tools with ease. The ability to use high-draw devices simultaneously is exactly why a power generator this size is important, and the Delta 1800 does an excellent job.

On the front panel, you’ll find six USB ports. Two of the ports are quick charge USB-C ports. The remaining pairs are USB-A ports, with one pair having quick charge capabilities. This arrangement allows you to recharge and power up to six devices simultaneously using the best connection method for the device. Related comparison: https://cleanpwr101.com/ecoflow-delta-mini-vs-delta/

A single 12 volt output port is also located on the front panel. This port allows the use of work lights, mini-fridges, and other 12v appliances and devices.


  • Ideal solution for RVs and mobile homes that need lots of power
  • Fastest recharge rate on the market


  • Output power below rated value
  • Low efficiency means more recharges
  • 800-cycle life of battery is below industry standard

Charging Options

The charging input ports are located away from the output ports, a nice detail that keeps things uncluttered when you’ve got a lot of cables running around. The standard recharging method is to use the included AC wall charger. The unit can handle up to a massive 1200 watts of AC input power, allowing for industry-leading recharge rates.

Another popular option is to use folding, portable solar panels to recharge the generator. The Delta 1800 includes the correct cable to connect a solar array, and the device can handle up to 400 watts of solar input. A special MPPT controller ensures that the energy is properly maintained and efficiently used to speed up recharge times.

A 12v car charger is also included. The car charger is the slowest way to recharge the device, but works very well when you are driving on a long road trip. Check the review of the 2nd generation of Ecoflow Delta.

How Fast Will it Charge

Using a 1,200 watt AC wall inverter/ charger, the Delta 1800 will recharge from zero to 80-percent in only one hour. Due to the design of the lithium-ion battery, the final 20-percent will take an additional hour before the unit is fully recharged.

Using up to 400 watts of solar energy will let the Delta 1800 recharge in as little as four hours. Even with smaller solar arrays, the MPPT controller ensures rapid recharge rates using solar panels.

The car charger will take between six and eight hours to recharge due to the low voltage connection. This is a safe way to slowly recharge the device which can improve the life cycle rate of the battery.

Real World Experiences

EcoFlow Delta 1800

A few buyers have brought a few items to attention regarding the differences between the numbers on paper and the numbers in practical use. Power generators will never give you 100-percent of the power you put in back out. Instead, they typically are 80 to 90-percent efficient. This one has tested out around 60-percent efficient, meaning there is a significant loss of parasitic power. Most likely, it is the high-power fan that causes power loss.


This is a good option for use to power appliances when you know that you’ll be able to recharge it. The power output is outstanding and numerous features that allow it to quickly recharge make it suitable for many types of uses. As a stand-alone, emergency device, the low efficiency and need for frequent high-output recharging might be a drawback for some buyers (>>> Find on Amazon).