Phone battery
A phone battery stores electrical energy to power a mobile phone.
How big is it?
54 kJ of energy
Energy · defined energy model
A little perspective
Laptop battery is about 4 times larger on this measurement.
Laptop battery: A laptop battery supplies electrical energy to a portable computer.
Measurements, assumptions & sources +
Phone battery
A defined 15 Wh stored-energy battery. Actual devices and usable energy vary.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
Laptop battery
A defined 60 Wh battery. This is stored energy, not device power.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 54 kJ
For comparison, this page uses energy. This is labelled defined energy model: an explicit comparison model rather than a claim that every example has the same value.
A defined 15 Wh stored-energy battery. Actual devices and usable energy vary.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Phone battery dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 54 kJ | Not recorded | defined energy model |
Around this scale
Go smaller. Go bigger.
These links use compatible energy records, ordered around the selected value.
Nearest lower value · EnergyFood kilocalorie4.184 kJA food kilocalorie is the energy needed to raise the temperature of one kilogram of water by one degree Celsius, used to express food energy.
Nearest higher value · EnergyLaptop battery216 kJA laptop battery supplies electrical energy to a portable computer.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
EnergyFood kilocalorie4.184 kJA food kilocalorie is the energy needed to raise the temperature of one kilogram of water by one degree Celsius, used to express food energy.
EnergyElectric car battery216 MJAn electric car battery stores energy to power an electric vehicle.
EnergyOne second of sunlight3.828 × 10¹¹ PJThe total energy emitted by the Sun in all directions over one second.EnergyLaptop battery216 kJA laptop battery supplies electrical energy to a portable computer.
EnergyHeat one litre of water334.4 kJHeating one litre of water is the energy required to raise the temperature of a standard amount of water to near boiling.
EnergyCoin cell stored energy2.43 kJCoin cell stored energy is the total electrical energy that can be delivered by a small, disc-shaped lithium battery before depletion.
EnergyA 2,000 kcal food day8.368 MJDaily food energy is the chemical energy a person obtains from all food and drink consumed over a day.
EnergyOne litre of petrol34 MJOne litre of petrol is a standard quantity of liquid fuel used in combustion engines.