How long will an EcoFlow RIVER Pro run a tablet charging?
About 20 hours — 20 h 18 min typically, from 19 h 26 min in the worst case to 20 h 44 min at best. That assumes a tablet charging pulling 25 W continuously, plus the station's 2 W USB-C / USB-A overhead — 27 W in total out of 548 usable watt-hours.
This appliance runs from the station's USB-C / USB-A, which skips the inverter — that is worth roughly 11% more running time than the same load through a mains socket.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × tablet charging, UK 230 V | 27 W | 19 h 26 min | 20 h 18 min | 20 h 44 min |
| 2 × tablet charging, UK 230 V | 52 W | 10 h 5 min | 10 h 32 min | 10 h 46 min |
| 1 × tablet charging, US 120 V | 27 W | 19 h 26 min | 20 h 18 min | 20 h 44 min |
- 2.5 nights of eight hours, or 0.85 days of continuous running.
- Usable energy: 548 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 1,045 Wh of rated capacity — 1.5× this station.
- Start-up: the tablet charging asks for 25 W at switch-on against this station's 1,200 W peak — comfortable.
Buy the EcoFlow RIVER Pro
Where to buy
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If this is for a power cut
For phones and tablets alone, a power bank is the cheaper answer. A power station earns its place when you also need the router or the fridge.
Without a power station: a 20,000 mAh power bank gives about 3.3 full charges of a phone. See the power bank numbers.
Power bank, 20,000 mAh. Keeps a phone going for days if you use it sparingly.
Look for: Capacity in watt-hours as well as mAh (about 74 Wh for 20,000 mAh), USB-C in and out, and keep it charged.
Plug-in power failure lights. They live in a socket as a night light, charge themselves, and switch on the moment the mains goes off, so you are never hunting for a torch in the dark.
Look for: A built-in battery you can pull out and carry as a torch, and a UK three-pin plug if you are in the UK.
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More: the power cut essentials list (US edition).
What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 18 h 41 min | -8% |
| The pack is five years old | 16 h 14 min | -20% |
| It is −10 °C outside | 16 h 14 min | -20% |
| You run it flat, no reserve | 22 h 34 min | +11% |
| You keep 20% back | 18 h 3 min | -11% |
Around 30 Wh a charge for a large tablet.
If you need it to run longer
These run a tablet charging 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 | 2 days 13 h | £849 / $999 |
| ALLPOWERS S2000 Pro | 1,451 | 40 h 55 min | £899 / $549 |
| Bluetti AC180P | 1,440 | 42 h 52 min | £899 / $649 |
| OUKITEL P2001 Ultimate | 2,000 | 2 days 12 h | £999 / $1,099 |
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 |
|---|---|---|---|---|
| Bluetti EB70S | 716 | 21 h 19 min | 9.7 kg | £449 / $429 |
| UGREEN PowerRoam 600 | 680 | 20 h 14 min | 8.4 kg | £449 / $499 |
| Goal Zero Yeti 700 | 677 | 20 h 9 min | 9.2 kg | — / $700 |
| Jackery Explorer 600 Plus | 632 | 18 h 49 min | 7.3 kg | — |
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