Apple
iPhone 15 Pro Max
The largest iPhone 15 battery needs about one-third more energy per full recharge than the iPhone 15 Pro.The iPhone 15 Pro Max battery stores 17.1 watt-hours.
Every calculation below uses the model-specific 4,422mAh figure. This is not a generic smartphone assumption.
- Rated energy
- 17.1Wh
- Rated capacity
- 4,422mAh
- Nominal voltage
- 3.86V
How many full charges?
We take 75% of the power bank’s rated Wh and divide it by this phone’s 17.1Wh. This is a planning estimate, not a charging guarantee.
18.5Wh rated → 13.9Wh planned delivery
37Wh rated → 27.8Wh planned delivery
74Wh rated → 55.5Wh planned delivery
(power-bank Wh × 0.75) ÷ 17.1Wh17.1Wh tells you how much.
Charging power tells you how fast.
The phone, USB power adapter and cable must negotiate a compatible charging profile. Use certified equipment suitable for Canada.
Alignment, heat and charger certification affect real charging power.
Two sources with different jobs.
The manufacturer supports the phone and charging claims. The model-specific battery source supplies the figures used in the calculation. These technical figures do not prove Canadian retail availability or an included charger.
Keep energy and charging power separate.
How many Wh is the iPhone 15 Pro Max battery?
The model-specific source lists 17.1Wh and 4,422mAh. Watt-hours are the useful figure when comparing it with a power bank.
How many times can a 10,000mAh power bank charge the iPhone 15 Pro Max?
A power bank rated around 37Wh provides about 1.6 full charges in this planning calculation. We assume 75% of rated energy reaches the phone battery.
Does 17.1Wh mean the phone charges at 17.1W?
No. Wh is stored energy; W is charging power at a point in time.