Grecell S5 4000W Portable Power Station vs Oukitel BP5000 Pro Max
What is the difference?
The Grecell S5 4000W Portable Power Station has 4 kW of power, 7 kW peak, a 5.04 kWh battery. The Oukitel BP5000 Pro Max has 5 kW of power, 10 kW peak, a 5.12 kWh battery.
Both use LiFePO4 batteries.
The Grecell S5 4000W Portable Power Station takes up to 2100 W from solar, the Oukitel BP5000 Pro Max takes up to 1000 W from solar. The Grecell S5 4000W Portable Power Station charges faster from panels.
The Grecell S5 4000W Portable Power Station weighs 112 lb, the Oukitel BP5000 Pro Max weighs 121 lb. The Grecell S5 4000W Portable Power Station is easier to carry.
The Grecell S5 4000W Portable Power Station has 120 V AC output, the Oukitel BP5000 Pro Max 120/240 V. Only 240 V output can run 240 V loads such as many well pumps, dryers and central AC.
Both can add extra batteries.
Specs side by side
| Grecell S5 4000W Portable Power Station | Oukitel BP5000 Pro Max | |
|---|---|---|
| Capacity (Wh) | 5040 | 5120 |
| Continuous (W) | 4000 | 5000 |
| Peak (W) | 7000 | 10000 |
| Solar input (W) | 2100 | 1000 |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycles | — | 5000 |
| Expandable | yes | yes |
| Weight (lb) | 112 | 121 |
| Warranty (yr) | — | 1 |
| Fridge run time | 95 h | 96.5 h |
| CPAP run time | 114 h | 115.9 h |
| Wi-Fi router run time | 332.6 h | 337.9 h |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-11-03 / 2026-11-03. Specs one maker does not list are left out of the comparison. Run times are for that appliance alone with a typical duty cycle, after inverter and depth-of-discharge losses. Sponsored links; we may earn a commission.
Common questions
Which is lighter, Grecell S5 4000W Portable Power Station or Oukitel BP5000 Pro Max?
The Grecell S5 4000W Portable Power Station. Lighter: 112 lb vs 121 lb.
Which charges faster from solar, Grecell S5 4000W Portable Power Station or Oukitel BP5000 Pro Max?
The Grecell S5 4000W Portable Power Station. Faster solar charging: 2100 W input vs 1000 W input.
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Compare other models → · All Grecell models · All Oukitel models