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Phone battery capacity

Google

Pixel 8a

A smaller reference battery that still stores more energy than the 15Wh generic planning assumption.
Direct answer

The Pixel 8a battery stores 17.04 watt-hours.

The genuine replacement battery lists 4,404mAh at 3.87V. Google separately lists 4,492mAh as the typical capacity; rated and typical capacity should not be silently mixed.

Rated energy
17.04Wh
Rated capacity
4,404mAh
Typical capacity
4,492mAh
Nominal voltage
3.87V
Power-bank calculation

How many full Pixel 8a charges?

We multiply the power bank’s rated Wh by 0.75, then divide by the phone’s 17.04Wh battery. The result is a planning estimate, not a laboratory guarantee.

5,000mAh class≈ 0.8×

18.5Wh rated → 13.9Wh planned delivery

10,000mAh class≈ 1.6×

37Wh rated → 27.8Wh planned delivery

20,000mAh class≈ 3.3×

74Wh rated → 55.5Wh planned delivery

(power-bank Wh × 0.75) ÷ 17.04Wh
Power banks for this phone

Three useful sizes for the Google Pixel 8a.

These are capacity classes, not paid rankings. The charge count uses this phone’s 17.04Wh battery and the same 75% delivered-energy allowance.

Capacity is not speed

17.04Wh tells you how much.
Charging watts tell you how fast.

Wired chargingFast USB-C charging; verify the charger profile

The phone, charger and cable must negotiate the same charging profile.

Wireless chargingQi wireless charging

Alignment, heat and charger certification can reduce real wireless power.

Evidence

Two sources, two different jobs.

The manufacturer page supports the phone and charging claims. The model-specific iFixit source supplies the battery figures used here; where voltage is not printed, it is explicitly labelled as derived. Replacement parts are labelled as genuine or aftermarket according to that source.

Manufacturer specificationGoogle phone specifications ↗Genuine battery partGoogle-part energy label via iFixit ↗Sources checked . We have not physically tested this phone.
Frequently asked

Keep energy and charging power separate.

How many Wh is the Google Pixel 8a battery?

The genuine replacement battery lists 17.04Wh, 4,404mAh and 3.87V. Watt-hours are the most useful capacity figure when comparing it with a power bank.

What is the Pixel 8a battery capacity in mAh?

The battery evidence lists 4,404mAh. Google separately lists 4,492mAh as typical capacity. Rated and typical figures describe different points, so this page labels them separately.

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

A 37Wh power bank gives about 1.6 full charges in our planning calculation. That assumes 75% of the power bank's rated energy reaches the phone battery; actual results vary.

What size power bank is useful for the Pixel 8a?

A 10,000mAh-class power bank rated around 36–37Wh is a practical everyday class and gives about 1.6 full charges in this calculation. A smaller 18.5Wh pack gives only about 0.8 charge, while a 74Wh pack gives about 3.3.

Does 17.04Wh mean the Pixel 8a charges at 17.04W?

No. 17.04Wh is stored energy. Charging power is a rate measured in watts; for this model the sourced charging description is Fast USB-C charging; verify the charger profile.

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