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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 extra battery for speakers.
No.
Yes, the device will automatically turn on when there is an input.
Compared to EcoFlow DELTA 2: 1. The PV input has been upgraded from 1 input to 2 inputs (EcoFlow DELTA 3 Plus has 2 inputs, and DELTA 3 still has 1 input). 2. The charging speed has been improved from full charge in 80 min to full charge in 56 min. 3. The waterproof rating has been upgraded from IP20 for the whole product to IP20 for the whole product and IP65 for the battery cells. 4. The EPS switchover time has been improved from 30 ms to 10 ms UPS. 5. The noise level has been reduced from <35dB at 600W and <45dB at 1200W within half a meter to <30dB at 600W and <40dB at 1200W. 6. It can now perform wireless hybrid operation with a 1.8KW generator (EcoFlow Smart Generator 3000 (Dual Fuel)) and supports automatic start-stop with just an AC cable. 7. Added a low-light detection circuit. 8. The extra battery port has been moved from the side to the back, supporting stacking and placement against a wall, and is compatible with D2, D2M, DP3, and D3 extra batteries.
Yes, the AC output and the internal system of the device are grounded. If the device's AC input is connected to the grid, it will share the same ground as the grid power.