The standard voltage of a AA battery is typically between 1.2 and 1.5 volts.
Understanding AA Battery Voltage
AA batteries are a common power source for many portable electronic devices. It's important to know their voltage range for efficient device operation.
Voltage Range
- The typical voltage range is 1.2 to 1.5 volts. This means that a new alkaline or lithium AA battery will usually start at or slightly above 1.5 volts. As the battery is used, its voltage will gradually drop.
- Rechargeable AA batteries, like NiMH, often have a nominal voltage of 1.2 volts.
Operational Voltage
The reference states that electronic devices using AA batteries should operate efficiently between 0.9 and 1.5 volts. Devices needing higher voltage won't operate correctly with a AA battery.
Examples
- A new, unused alkaline AA battery might measure 1.55 volts.
- A half-used alkaline AA battery might measure 1.3 volts.
- A fully charged NiMH rechargeable AA battery might measure 1.4 volts and as it discharges will settle at 1.2 volts.
Table of Typical AA Battery Voltages
| Battery Type | Nominal Voltage | Operational Range |
|---|---|---|
| Alkaline | 1.5V | 0.9 - 1.5V |
| Lithium | 1.5V | 0.9 - 1.5V |
| NiMH (Rechargeable) | 1.2V | 0.9 - 1.5V |
Key Takeaways
- AA batteries generally have a voltage of between 1.2 and 1.5 volts.
- Devices are designed to operate within this range.
- Rechargeable AA batteries have slightly lower nominal voltages.
