Welcome to EcoFlow Support

Welcome to EcoFlow Support

We're here for you

Recommended Search

EcoFlow STREAM 5000
EcoFlow STREAM Expansion Battery 5000
EcoFlow STREAM AC 5000
EcoFlow DELTA 2 Max
EcoFlow DELTA 3 Max Plus (2048Wh)
DELTA 3 Classic (1024Wh)
DELTA 3 Ultra (3072Wh)
DELTA 3 Ultra Plus (3072Wh)
EcoFlow DELTA 3 Max (2048Wh)
EcoFlow DELTA 3 1000 Air
EcoFlow DELTA 3 2000 Air
EcoFlow RAPID Magnetic Power Bank
EcoFlow TRAIL Plus 300 DC
EcoFlow TRAIL 300 DC
EcoFlow TRAIL 200 DC
EcoFlow RAPID Pro 3-in-1 Power Bank (10,000mAh, 67W)
EcoFlow RAPID Power Bank (25,000mAh, 170W)
EcoFlow RAPID Pro Power Bank (27,650mAh, 300W, 140W Built-in Cable)
EcoFlow RAPID Pro Power Bank (20,000mAh, 230W, 100W Built-in Cable)
EcoFlow DELTA Pro 3
EcoFlow DELTA Pro
EcoFlow DELTA 2
EcoFlow 100W Flexible Solar Panel
EcoFlow 60W Portable Solar Panel
EcoFlow 110W Portable Solar Panel
Alternator Charger (800W)
EcoFlow DELTA 3
EcoFlow RIVER 3 Plus
EcoFlow RIVER 3
EcoFlow RIVER 2 Pro
EcoFlow RIVER 2
Lithium 12V 100Ah Deep Cycle Marine Trolling Motor Battery
EcoFlow WAVE 2
EcoFlow GLACIER
EcoFlow RIVER 2 Max
EcoFlow 400W Portable Solar Panel
EcoFlow 45W Portable Solar Panel
EcoFlow NextGen 160W Portable Solar Panel
EcoFlow NextGen 220W Portable Solar Panel

FAQ

search icon
DELTA 3 Ultra (3072Wh)

What are the warranty policies for DELTA 3 Ultra (3072Wh) or DELTA 3 Ultra Plus (3072Wh)?

The device has a 3-year basic warranty, which can be extended by 2 years if you register on the app. (JP: 5-year basic warranty)

How many decibels of noise does the device generate during normal use?

When within 1.64 feet of the device, the noise generated is less than 25 dB during 600W consumption and less than 40 dB during 1800W consumption. 30 dB is about the same volume as quiet whispering, or the environmental noise level of a quiet library or office. Most people find 30 dB to be a comfortable level of background noise.

When using instruments to measure the AC power output, why are the L and N measurements reversed?

The portable power station is a floating-ground system, meaning that this type of detection equipment is likely to be ineffective. The detection equipment is designed to detect grounded output from grid power. The voltage difference between neutral and ground in the grid is very small, which is why there is a distinction between positive and reverse wiring. The device's AC output is generated by boosting the internal battery voltage through an inverter. Since there is no reference ground, testers may indicate reversed wiring. Furthermore, in the portable power station, both L and N are energized. When operating in inverter-only mode, the two wires can be regarded as equivalent, so the concept of reversed wiring does not apply. Think of it like this: AC voltage follows a sine wave pattern and its direction changes. As a result, the electric potential of L and N change relative to each other. On a microscopic timescale, current flows from high potential to low potential. However, since AC operates at 50 Hz, with 50 direction change cycles per second, the frequency is too high to distinguish. On a macroscopic level, the two wires appear the same during inversion. Many instruments will show the same peak voltage for both wires, so they can be regarded as equivalent with no distinction.

What should I do if the device won't turn on?

1. Long-press the power supply button for at least 3 seconds to check whether the display turns on. 2. Connect an input to charge the device and check whether there is input power. If there is no response after 10 minutes, contact the after-sales team for assistance.

Does the device support Bypass Mode output?

Yes, Bypass Mode output is supported, and it is enabled by default. It can also be disabled in the app. If the grid power is unstable and may cause improper functioning or damage to appliances, you can enable this setting in the EcoFlow app for appliances that require high-quality power output. For example, this mode allows you to use only the AC output power from the portable power station for speakers.

Contact us