Phone battery capacity

Google

Pixel 8 Pro

A large Pixel battery whose real charge count is lower than a generic 15Wh-phone estimate suggests.

Direct answer

The Pixel 8 Pro battery stores 19.25 watt-hours.

The model-specific battery source lists 19.25Wh, 4,950mAh and a separately published typical value of 5,050mAh. Nominal voltage is 3.89V. This technical record says nothing about a UK retailer, GBP price or warranty.

Rated energy: 19.25Wh
Rated capacity: 4,950mAh
Typical capacity: 5,050mAh
Nominal voltage: 3.89V

Power-bank calculation

How many full charges?

We take 75% of the power bank’s rated Wh and divide it by this phone’s 19.25Wh. This is a planning estimate, not a charging guarantee.

5,000mAh class≈ 0.7×

18.5Wh rated → 13.9Wh planned delivery

10,000mAh class≈ 1.4×

37Wh rated → 27.8Wh planned delivery

20,000mAh class≈ 2.9×

74Wh rated → 55.5Wh planned delivery

(power-bank Wh × 0.75) ÷ 19.25Wh

Capacity is not speed

19.25Wh tells you how much.
Charging power tells you how fast.

Wired chargingFast USB-C charging with a compatible PPS charger

The phone, USB power adapter and cable must negotiate a compatible charging profile. Use certified equipment suitable for the UK 230V/50Hz supply.

Wireless chargingQi-certified wireless charging

Alignment, heat and charger certification affect real charging power.

Evidence

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 UK retail availability or an included charger.

Manufacturer specificationGoogle specifications ↗Model-specific battery evidenceBattery data via iFixit ↗Sources checked 2026-08-21. We have not physically tested this phone.

Frequently asked

Keep energy and charging power separate.

How many Wh is the Google Pixel 8 Pro battery?

The model-specific source lists 19.25Wh and 4,950mAh. Watt-hours are the useful figure when comparing it with a power bank.

How many times can a 10,000mAh power bank charge the Pixel 8 Pro?

A power bank rated around 37Wh provides about 1.4 full charges in this planning calculation. We assume 75% of rated energy reaches the phone battery; actual results vary with cable, temperature and use while charging.

Does 19.25Wh mean the phone charges at 19.25W?

No. 19.25Wh is stored energy. Charging power is a rate measured in watts; the sourced charging description for this model is Fast USB-C charging with a compatible PPS charger.