A typical phone battery, which is usually a lithium-ion battery, operates at a voltage between 3.7 volts and 4.2 volts.
Smartphones primarily use lithium-ion (Li-ion) or lithium-polymer (Li-Po) batteries. The nominal voltage for a single Li-ion or Li-Po cell is typically 3.7V. However, the actual voltage varies depending on the state of charge. When fully charged, the voltage usually reaches around 4.2V, and as the battery discharges, the voltage drops until it reaches a minimum voltage (often around 3.0V) at which point the phone may shut down to prevent damage to the battery.
Here's a breakdown:
- Nominal Voltage: 3.7V (This is the "average" voltage).
- Fully Charged Voltage: ~4.2V
- Discharged Voltage: ~3.0V (varies)
The specific voltage range ensures optimal performance and longevity of the battery. Maintaining the battery voltage within this safe operating range is crucial for the overall health and lifespan of the battery.
