UGREEN 30W Charger on a MacBook Air: Measured
UGREEN's foldable 30W charger measured on a MacBook Air M5: 28.4 W delivered, and its full 30 W offered on three separate voltage rails.
UGREEN’s 30W foldable USB-C charger, tested against a MacBook Air M5 with a low battery, per the methodology .
The numbers
| Rated | 30 W |
| Negotiated | 30 W (20 V up to 1.5 A) |
| Live draw | 28.4 W (19.8 V at 1.43 A) |
| Protocol | USB PD 3.0 |
Profile menu:
| Profile | Rail |
|---|---|
| 15 W | 5 V up to 3 A |
| 27 W | 9 V up to 3 A |
| 30 W | 12 V up to 2.5 A |
| 30 W | 15 V up to 2 A |
| 30 W | 20 V up to 1.5 A |
No PPS.
Its full rating, three times over
Five profiles, and the last three are all 30 W - at 12 V, 15 V and 20 V. That is the most flexible fixed-profile menu of any charger measured in this series.
Devices don’t all run their internal power conversion most efficiently at the same voltage. A charger that publishes its full rating on several rails lets each device pick whichever suits its converter, instead of forcing a compromise. The Mac takes 20 V.
For comparison, Apple’s 30W adapter offers its rating on two rails, and most 30 W chargers offer it on one. UGREEN adds a 12 V rung on top - a rail that is genuinely uncommon at this size.
There’s no PPS here, so phones that support it won’t get the fine-grained voltage control offered by the Anker Nano 30W . For laptop charging that makes no difference.
Buying one
The UGREEN 30W foldable charger delivers its full rating and offers unusually broad rail coverage for a compact charger.
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