Laptop battery
A laptop battery supplies electrical energy to a portable computer.
How big is it?
216 kJ · energy
Energy · defined energy model
A little perspective
Laptop battery vs Heat one litre of water: energy comparison
The energy of heating one litre of water is about 1.55 times the energy of a laptop battery.
ENERGY STORED OR TRANSFERRED
Heating one litre of water is the energy required to raise the temperature of a standard amount of water to near boiling.
Measurements, assumptions & sources +
Laptop battery
Energy: 216 kJ; defined energy model.
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.
Heat one litre of water
Energy: 334.4 kJ; defined energy model.
An ideal model: 1 kg water heated by 80 K at 4,180 J/(kg·K). Excludes heat losses and phase change.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 216 kJ
We compare the energy of a laptop battery. This is an illustrative comparison value, not a claim that every example is the same.
A defined 60 Wh battery. This is stored energy, not device power.
The picture identifies the subject; the diagram compares the recorded values. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 216 kJ | Not recorded | defined energy model |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
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.
EnergyPhone battery54 kJA phone battery stores electrical energy to power a mobile phone.
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.
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.
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.
EnergyA 10 kWh day36 MJThis is the amount of electrical energy consumed by a household over the course of one day.