Phone battery capacity

Samsung

Galaxy S24

The smallest Galaxy S24 battery, with a clearly separated 3,880mAh rated minimum and 4,000mAh typical capacity.

Direct answer

The Galaxy S24 battery stores 15.06 watt-hours.

The model-specific battery source lists 15.06Wh, 3,880mAh and a separately published typical value of 4,000mAh. Nominal voltage is 3.88V. This technical record says nothing about an Irish retailer, euro price or warranty.

Rated energy: 15.06Wh
Rated capacity: 3,880mAh
Typical capacity: 4,000mAh
Nominal voltage: 3.88V

Power-bank calculation

How many full charges?

We take 75% of the power bank’s rated Wh and divide it by this phone’s 15.06Wh. This is a planning estimate, not a charging guarantee.

5,000mAh class≈ 0.9×

18.5Wh rated → 13.9Wh planned delivery

10,000mAh class≈ 1.8×

37Wh rated → 27.8Wh planned delivery

20,000mAh class≈ 3.7×

74Wh rated → 55.5Wh planned delivery

(power-bank Wh × 0.75) ÷ 15.06Wh

Capacity is not speed

15.06Wh tells you how much.
Charging power tells you how fast.

Wired chargingUp to 25W wired charging with a compatible USB-C adapter

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

Wireless chargingFast Wireless Charging 2.0 and Wireless PowerShare

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 Irish retail availability or an included charger.

Manufacturer specificationSamsung 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 Samsung Galaxy S24 battery?

The model-specific source lists 15.06Wh and 3,880mAh. Watt-hours are the useful figure when comparing it with a power bank.

How many times can a 10,000mAh power bank charge the Galaxy S24?

A power bank rated around 37Wh provides about 1.8 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 15.06Wh mean the phone charges at 15.06W?

No. 15.06Wh is stored energy. Charging power is a rate measured in watts; the sourced charging description for this model is Up to 25W wired charging with a compatible USB-C adapter.