Allpowers P1800 vs Generac GB1000
What is the difference?
The Allpowers P1800 has 1.8 kW of power, 3.6 kW peak, a 1.02 kWh battery. The Generac GB1000 has 1.6 kW of power, 3.2 kW peak, a 1.09 kWh battery.
The Allpowers P1800 uses a LiFePO4 battery, the Generac GB1000 a lithium-ion (NMC) one. LiFePO4 generally lasts more charge cycles, so the Allpowers P1800 should last longer.
The Allpowers P1800 is rated for 3000 cycles, the Generac GB1000 is rated for 800 cycles.
The Allpowers P1800 takes up to 650 W from solar, the Generac GB1000 takes up to 468 W from solar. The Allpowers P1800 charges faster from panels.
The Allpowers P1800 charges from a wall outlet to 80 % in 60 min, the Generac GB1000 charges from a wall outlet to 80 % in 2.1 h. The Allpowers P1800 is ready again sooner.
Specs side by side
| Allpowers P1800 | Generac GB1000 | |
|---|---|---|
| Capacity (Wh) | 1024 | 1086 |
| Continuous (W) | 1800 | 1600 |
| Peak (W) | 3600 | 3200 |
| Solar input (W) | 650 | 468 |
| Chemistry | LiFePO4 | NMC |
| Cycles | 3000 | 800 |
| Expandable | — | — |
| Weight (lb) | — | 29 |
| Warranty (yr) | — | 3 |
| Fridge run time | 19.3 h | 20.5 h |
| CPAP run time | 23.2 h | 24.6 h |
| Wi-Fi router run time | 67.6 h | 71.7 h |
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Specs as read from manufacturer pages on 2026-11-03 / 2026-10-28. 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 has more capacity, Allpowers P1800 or Generac GB1000?
The Generac GB1000. More capacity: 1086 Wh vs 1024 Wh.
Which charges faster from solar, Allpowers P1800 or Generac GB1000?
The Allpowers P1800. Faster solar charging: 650 W input vs 468 W input.
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Compare other models → · All Allpowers models · All Generac models