# What is the amperage of a battery?

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### What is the amperage of a battery?

It is measured in **Ampere**-hour – or, more commonly, milliampere-hours (mAh). Most of **Battery** AA format rechargeable batteries display between 2,100 and 2,500 mAh, with a maximum of 2,700, against 2,800 for alkalines.

### How to measure the amperage of a battery?

Test a **pile** with a multimeter Calibrate the device according to the **pile** you want to test (2V is sufficient for a **pile** AA of 1.5V, for example) Plug the black wire into the COM socket and place the connector on the negative pole of the **pile**.

### How do batteries work?

During battery operation, the zinc sulphate solution is enriched with zinc ions; the nitrate ions will therefore migrate towards this solution. At the same time, the ammonium ions go into the copper sulphate tank, in order to compensate for the deficit in + ions, due to the consumption of copper ions.

### How to calculate the battery operating equation?

The cell operating equation is obtained by combining the two electrochemical equations at the electrodes. Each of the electrochemical equations is multiplied by a number such that the number of electrons exchanged between the two electrodes is the same.

### How to calculate the capacity of a battery?

This capacity is measured in watt-hours (Wh the symbol). A Watt-hour is the voltage (V) that the battery delivers multiplied by the amount of current (Amps) the battery can deliver over a certain amount of time (usually hours). Voltage x Amps x Hours = Wh.

### How long does a battery last?

This is what powers battery-operated devices such as walkmans and other connected items. Rechargeable type batteries have a lifetime of several years depending on how you use them.