Battery life is the length of time a device can continue to work before it needs its battery to be recharged.

By dividing Watt-hours by the battery's nominal voltage (V), you can convert Watt-hours to Amp-hours: Wh / V = Ah

The Amp-hour, also known as the Ampere-hour, is a unit of charge that equals current flow over time. One amp of continuous current flow for one hour is equal to one amp. A milliamp-hour, also known as a milliampere-hour, is one-thousandth of an amp-hour, so a 1000 mAh battery is equivalent to one amp-hour.

The statistics are just estimates; actual results can differ depending on battery condition, age, temperature, discharge rate, and other variables. When using fresh, high-quality cells at room temperature and an average run time of 1 hour to 1 year, the expected results would be the most accurate.

How can you figure out how long your battery would last?

It would be fantastic if you never had to charge your mobile again. However, you're probably well aware that no battery lasts indefinitely. This battery life calculator uses the following formula to measure the approximate runtime of your battery:

battery life = capacity / consumption * (1- discharge safety)

where

Capacity is the capacity of your battery, measured in ampere-hours. You can usually find this value printed on your battery.

Consumption is the average current draw of your electronic device, expressed in amperes.

Discharge safety is the percentage of your battery capacity that is never used.

mAHr Capacity of typical batteries