Appliance · Electronics
How many watts does a phone charger use — and what can run it?
A 20 W USB-C phone charger (Apple 20W adapter) delivers at most 20 W; the wall draw is slightly higher. Which power stations run it, and for how long.
The representative charger is Apple's 20W USB-C Power Adapter. Its 20 W is the rated output — the most it can deliver to the phone — and the site uses it as the running figure. The draw from the outlet is slightly higher because of conversion losses inside the adapter, so 20 W is a close, slightly low estimate at full power and a high one the rest of the time.
What changes the draw
A phone takes full power only for part of a charge; as the battery fills, the charging current tapers off, and a full phone left on the charger draws very little. Using the phone while it charges keeps the draw up. The page assumes 2 hours a day at the full 20 W, 40 Wh.
Skip the outlet if you can
Most stations on this site have USB-C ports, listed on each station's card. Charging the phone from one of those skips both the wall adapter and the station's inverter, and the inverter is one of the losses the 0.85 runtime factor accounts for (method). The tables below cover the AC outlet with the adapter plugged in.
No starting surge
A charger has no motor start and no starting figure; every station on the site with an AC outlet covers 20 W.
Reading the tables
Runtime is the time the adapter could run at its full 20 W, not a number of phone charges. Example: the MARBERO M82 record has no maker factor, so the default 0.85 applies: 88.8 Wh × 0.85 ÷ 20 W = 3.8 hours.
Power stations that can run it
Pass = continuous output ≥ 20 W. Runtime = capacity × maker's factor ÷ 20 W, nothing else plugged in. Method.
| Model | Fits | Runtime at 20 W | Capacity | List price |
|---|---|---|---|---|
| MARBERO 88Wh Portable Power Station (M82) | Yes | 3.8 h | 89 Wh | $119.99 |
| DARAN R100 (89.6Wh) | Yes | 3.8 h | 90 Wh | $149.99 |
| Bluetti EB3A | Yes | 11 h | 269 Wh | $219 |
| EcoFlow RIVER 3 Plus | Yes | 12 h | 286 Wh | $299 |
| Anker SOLIX C300 | Yes | 12 h | 288 Wh | $429.99 |
| Anker SOLIX C300 DC | No | — | 288 Wh | $349.99 |
| Jackery Explorer 300 | Yes | 12 h | 292 Wh | $289 |
| Goal Zero Yeti 500 | Yes | 21 h | 499 Wh | $499.95 |
| Bluetti AC70 | Yes | 33 h | 768 Wh | $359 |
| Anker SOLIX C1000 Gen 2 | Yes | 44 h | 1,024 Wh | $499.99 |
| EcoFlow DELTA 3 | Yes | 44 h | 1,024 Wh | $699 |
| EcoFlow DELTA 3 Classic | Yes | 44 h | 1,024 Wh | $599 |
| EcoFlow DELTA 3 Plus | Yes | 44 h | 1,024 Wh | $799 |
| Anker SOLIX C1000X | Yes | 45 h | 1,056 Wh | $469.99 |
| Jackery Explorer 1000 v2 | Yes | 45 h | 1,070 Wh | $559 |
| Bluetti AC180 | Yes | 44 h | 1,152 Wh | $499 |
| Jackery Explorer 1000 Plus | Yes | 2 d 6 h | 1,264 Wh | $699 |
| Goal Zero Yeti 1500 | Yes | 2 d 16 h | 1,505 Wh | $1,499.95 |
| Goal Zero Yeti 1500X | Yes | 2 d 16 h | 1,516 Wh | $1,124.89 |
| EcoFlow DELTA Max (2000) | Yes | 3 d 14 h | 2,016 Wh | — |
| Jackery Explorer 2000 v2 | Yes | 3 d 15 h | 2,042 Wh | $999 |
| Jackery Explorer 2000 Plus | Yes | 3 d 15 h | 2,043 Wh | — |
| Anker SOLIX C2000 Gen 2 | Yes | 3 d 15 h | 2,048 Wh | $899.99 |
| Bluetti AC200L | Yes | 3 d 15 h | 2,048 Wh | $899 |
| EcoFlow DELTA 2 Max | Yes | 3 d 15 h | 2,048 Wh | $1,299 |
| EcoFlow DELTA 3 Max | Yes | 3 d 15 h | 2,048 Wh | $1,199 |
| EcoFlow DELTA 3 Max Plus | Yes | 3 d 15 h | 2,048 Wh | $1,599 |
| Bluetti Elite 200 V2 | Yes | 3 d 7 h | 2,074 Wh | $899 |
| Jackery HomePower 3000 | Yes | 5 d 11 h | 3,072 Wh | $1,499 |
| Anker SOLIX F3800 Plus | Yes | 6 d 19 h | 3,840 Wh | $2,599.99 |
| EcoFlow DELTA Pro 3 | Yes | 7 d 6 h | 4,096 Wh | $3,299 |
Generators that can run it
| Model | Fits | Load | Published run time | CO sensor | List price |
|---|---|---|---|---|---|
| Champion 100396 3400W Electric Start Dual Fuel Inverter | Yes | 1 % (gasoline) | 7.5 h @ 25 % | No | — |
| Champion 201241 13,500W Electric Start Tri Fuel Generator | Yes | 0 % (gasoline) | 8 h @ 50 % | Yes | — |
| Champion 201319 4500W Electric Start Dual Fuel Inverter | Yes | 1 % (gasoline) | 14 h @ 25 % | Yes | — |
| DuroMax XP13000EH | Yes | 0 % (gasoline) | 17 h @ 25 % · 8 h @ 50 % | Yes | $1,299 |
| DuroMax XP9500iH | Yes | 0 % (gasoline) | 21 h @ 25 % · 11 h @ 50 % | Yes | $1,999 |
| Generac GP8000E (with COsense, model 7715) | Yes | 0 % (gasoline) | 10 h @ 50 % | Yes | — |
| Generac iQ3500 (with COsense) | Yes | 1 % (gasoline) | 14.1 h @ 25 % · 8.9 h @ 50 % | Yes | — |
| Honda EU2200i | Yes | 1 % (gasoline) | 8.1 h @ 25 % · 3.2 h @ 100 % | Yes | $1,199 |
| Honda EU3200i | Yes | 1 % (gasoline) | 8.6 h @ 25 % · 3.3 h @ 100 % | Yes | $2,799 |
| Honda EU7000iS | Yes | 0 % (gasoline) | 16 h @ 25 % · 6.4 h @ 100 % | Yes | $4,899 |
| WEN DF680iX | Yes | 0 % (gasoline) | 6.1 h @ 50 % | Yes | $803.40 |
| WEN GN400i | Yes | 1 % (gasoline) | 7 h @ 50 % | No | $479.99 |
| Westinghouse WGen7500DFc | Yes | 0 % (gasoline) | 11 h @ 25 % | Yes | $1,299 |
| Westinghouse WGen9500DF | Yes | 0 % (gasoline) | 12 h @ 25 % · 8 h @ 50 % | No | $1,249 |
| Westinghouse WGen9500DFc | Yes | 0 % (gasoline) | 12 h @ 25 % · 8 h @ 50 % | Yes | $1,399 |
| Westinghouse WGen9500DFc EFI | Yes | 0 % (gasoline) | 15 h @ 25 % · 10 h @ 50 % | Yes | $1,549 |
Frequently asked questions
How many watts does a phone charger use?
Can any power station charge a phone?
How many phone charges does a power station give?
Sources
- Apple — 20W USB-C Power Adapter product page (accessed 2026-10-31)
Page updated 2026-10-31.