EcoFlow DELTA Pro 3
4096 Wh, 4000 W
Grecell S5 4000W Portable Power Station
Power station. Specs from the manufacturer page (checked ).
The Grecell S5 4000W is a 5040 Wh portable power station with a LiFePO4 (lithium iron phosphate) battery. Its AC outputs are rated 4000 W each, with a 7000 W peak, at 100-120V 50/60Hz. It accepts solar (PV) input up to 2100 W and AC input up to 1800 W.
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Capacity
5040Wh
Continuous
4000W
Peak / surge
7000W
Solar input
2100W
Chemistry
LiFePO4
Expandable
Yes
Weight
51kg
Key features
- AC outputs: 6 x 4000W (7000W peak), 100-120V~50Hz/60Hz
- Overload protection: 4100W-4200W
- UPS switchover time: 20 ms or less
- PV input: DC 12V-150V, 15A max, 2100W max
- AC input: 90V-140V, 16A, 1800W max
- USB-C outputs: 5V/9V/12V/15V/20V 3A, PD 60W
- DC 5521 outputs: 12V 10A each, 30A max
- Car charger input: 12V-15V, 8A
Specifications
| Capacity | 5040 Wh |
|---|---|
| Continuous output | 4000 W |
| Peak / surge | 7000 W |
| Solar input | 2100 W |
| Expandable | Yes |
| Battery chemistry | LiFePO4 |
| AC output voltage | 100-120V |
| Weight | 51 kg (112.4 lb) |
| Dimensions | 64.0 × 30.2 × 43.7 cm (25.2 × 11.9 × 17.2 in) |
From the Grecell page. Values the manufacturer does not publish are left out.
What is in the box
- 1 x 4000W solar generator
- 1 x XT90 to Anderson cable
- 1 x Anderson cable
- 1 x car charger cable
- 1 x AC charger
- User manual
How long it runs common appliances
| Appliance | Watts | Runs? | Hours |
|---|---|---|---|
| Refrigerator (with freezer) | 120 W (600 start) | yes | 4.0 days |
| Chest freezer | 100 W (500 start) | yes | 5.5 days |
| CPAP (no humidifier) | 35 W (40 start) | yes | 4.8 days |
| Gas boiler (pump + controls) | 120 W (300 start) | yes | 67 h |
| Wi-Fi router + modem/ONU | 12 W | yes | 13.9 days |
| Starlink (standard dish) | 60 W (100 start) | yes | 67 h |
| TV 50" | 75 W | yes | 53 h |
| Sump pump 1/2 HP | 920 W (2150 start) | yes | 4.3 h |
| Well pump 1/2 HP | 880 W (2000 start) | yes | 4.5 h |
| Space heater 1500 W | 1500 W | yes | 3.8 h |
Assumes 88 % inverter efficiency, 90 % usable capacity and typical duty cycles. Build your own list in the calculator.
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Grecell S5 4000W Portable Power Station comparisons
- S5 4000W Portable Power Station vs EcoFlow DELTA Pro 3
- S5 4000W Portable Power Station vs Anker SOLIX F3800 Plus
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- S5 4000W Portable Power Station vs Goal Zero YETI PRO 4000
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All 10 comparisons
Connection and wiring
Follow the diagrams in the Grecell manual.
Open the Grecell manual (PDF) →
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long will the Grecell S5 4000W Portable Power Station run a refrigerator?
About 95 hours for a typical 120 W refrigerator that runs 35 % of the time, after inverter and depth-of-discharge losses.
Can the Grecell S5 4000W Portable Power Station start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 7000 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.