Enter the battery capacity and the load current into the calculator to determine the battery duration. This calculator helps to estimate how long a battery will last under a specific load.
Battery Duration Formula
The following formula is used to calculate the battery duration.
BD = C / LC
Variables:
- BD is the battery duration (hours)
- C is the battery capacity (mAh)
- LC is the load current (mA)
To calculate the battery duration, divide the battery capacity by the load current.
What is Battery Duration?
Battery duration is the time a battery can power a device before it runs out of charge. It is dependent on the battery’s capacity and the current drawn by the device. Understanding battery duration is crucial for managing the energy supply of portable electronic devices and ensuring their reliable operation.
How to Calculate Battery Duration?
The following steps outline how to calculate the Battery Duration.
- First, determine the battery capacity (C) in milliampere-hours (mAh).
- Next, determine the load current (LC) in milliamperes (mA) that the device draws.
- Next, gather the formula from above = BD = C / LC.
- Finally, calculate the Battery Duration (BD) in hours.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Battery capacity (C) = 2000 mAh
Load current (LC) = 500 mA
