Phone batteries are primarily measured in milliampere-hours (mAh) or ampere-hours (Ah), reflecting their capacity to store energy. A higher mAh or Ah rating indicates a battery can power a device for a longer duration between charges. The voltage is also an important factor.
Understanding Battery Capacity
- Capacity: Measured in mAh or Ah.
- A milliampere-hour (mAh) is 1/1000 of an ampere-hour (Ah).
- Higher mAh/Ah equals longer battery life.
- Example: A 5000 mAh battery should, theoretically, power a device drawing 500 mA for 10 hours.
- Voltage: Represents the electrical potential.
- Lithium-ion batteries have a specific voltage range.
- Voltage impacts the power output of the battery.
Factors Affecting Battery Life
While mAh/Ah provides an estimate, actual battery life depends on numerous factors, including:
- Screen size and brightness
- Processor usage
- Network connectivity (Wi-Fi, cellular)
- Apps running in the background
- Operating system efficiency
Battery Measurement Units
| Unit | Description | Relation |
|---|---|---|
| mAh | Milliampere-hour; a measure of battery capacity. | 1 Ah = 1000 mAh |
| Ah | Ampere-hour; a measure of battery capacity. | 1 Ah can deliver 1 Ampere for 1 hour |
| Voltage | Measure of electrical potential. | Impacts power output. |
