How long will an EcoFlow RIVER Pro run an angle grinder?
It will not. An angle grinder draws 900 W and the EcoFlow RIVER Pro's inverter is rated at 600 W, so the station will refuse the load rather than run it slowly. Capacity is irrelevant here — you need a bigger inverter, not a bigger battery.
Same story as the saw: size the station for the surge, not the hours.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × angle grinder, UK 230 V | 280 W | — | — | — |
| 2 × angle grinder, UK 230 V | 550 W | — | — | — |
| 1 × angle grinder, US 120 V | 280 W | — | — | — |
- Usable energy: 496 Wh of the 720 Wh on the box, after chemistry, inverter losses and the reserve.
- To keep it going for a full 24 hours you would need about 9,247 Wh of rated capacity — 12.8× this station.
- Start-up: the angle grinder asks for 1,800 W at switch-on against this station's 1,200 W peak — not enough.
Buy the EcoFlow RIVER Pro
Where to buy
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What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | — | -8% |
| The pack is five years old | — | -20% |
| It is −10 °C outside | — | -20% |
| You run it flat, no reserve | — | +11% |
| You keep 20% back | — | -11% |
If you need it to run longer
These run an angle grinder for at least twice as long as the EcoFlow RIVER Pro does, cheapest first.
| Station | Wh | Typical | Indicative price |
|---|---|---|---|
| Jackery Explorer 2000 v2 | 2,042 | 5 h 14 min | £849 / $999 |
| Bluetti AC180P | 1,440 | 3 h 43 min | £899 / $649 |
| OUKITEL P2001 Ultimate | 2,000 | 5 h 8 min | £999 / $1,099 |
| Bluetti AC240 | 1,536 | 3 h 56 min | £1,099 / $999 |
The cheapest step up: Jackery Explorer 2000 v2
Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.
Smaller options that still work
| Station | Wh | Typical | Weight | Indicative price |
|---|---|---|---|---|
| DJI Power 500 | 512 | 1 h 20 min | 7.3 kg | £399 / $449 |
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