30,000 mAh to watt-hours
111.0 Wh
30,000 mAh at 3.7 V (lithium-ion cell voltage) · 100-160 Wh: airline approval needed
30,000 mAh by voltage
| Nominal voltage | Energy |
|---|---|
| 1.2 V | 36.0 Wh |
| 3.2 V | 96.0 Wh |
| 3.7 V | 111.0 Wh |
| 3.85 V | 115.5 Wh |
| 5 V | 150.0 Wh |
| 7.4 V | 222.0 Wh |
| 12 V | 360.0 Wh |
Wh = mAh × V ÷ 1000. Power banks rate mAh at the 3.6-3.7 V cell voltage, not 5 V USB output.
What it can charge
With about 65% real-world efficiency to the device: ~4.8 charges of a 15 Wh phone, ~1.2 of a 60 Wh laptop.
FAQ
How many Wh is 30,000 mAh?
111.0 Wh at 3.7 V.
Can I fly with a 30,000 mAh power bank?
At 111 Wh, it needs airline approval (100-160 Wh) and must be in carry-on.