Phone battery capacity

Google

Pixel 7a

The smallest battery in this first Pixel reference set, but still larger than the site's old generic 15Wh assumption.

Direct answer

The Pixel 7a battery stores 16.55 watt-hours.

The model-specific battery source lists 16.55Wh, 4,300mAh and a separately published typical value of 4,385mAh. Nominal voltage is 3.85V. This technical record says nothing about an Indian retailer, INR price or warranty.

Rated energy: 16.55Wh
Rated capacity: 4,300mAh
Typical capacity: 4,385mAh
Nominal voltage: 3.85V

Power-bank calculation

How many full charges?

We take 75% of the power bank’s rated Wh and divide it by this phone’s 16.55Wh. This is a planning estimate, not a charging guarantee.

5,000mAh class≈ 0.8×

18.5Wh rated → 13.9Wh planned delivery

10,000mAh class≈ 1.7×

37Wh rated → 27.8Wh planned delivery

20,000mAh class≈ 3.4×

74Wh rated → 55.5Wh planned delivery

(power-bank Wh × 0.75) ÷ 16.55Wh

Capacity is not speed

16.55Wh tells you how much.
Charging power tells you how fast.

Wired chargingUSB-C charging; verify the exact charger profile

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

Wireless chargingQi 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 Indian 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 7a battery?

The model-specific source lists 16.55Wh and 4,300mAh. 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 7a?

A power bank rated around 37Wh provides about 1.7 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 16.55Wh mean the phone charges at 16.55W?

No. 16.55Wh is stored energy. Charging power is a rate measured in watts; the sourced charging description for this model is USB-C charging; verify the exact charger profile.