Enter the battery capacity and the load current into the calculator to determine the reserve capacity of a battery in minutes.
Reserve Capacity Formula
The following formula is used to calculate the reserve capacity of a battery.
RC = (BC / LC) * 60
Variables:
- RC is the reserve capacity (minutes)
- BC is the battery capacity (Ah)
- LC is the load current (A)
To calculate the reserve capacity, divide the battery capacity by the load current and then multiply by 60 to convert the result into minutes.
What is Reserve Capacity?
Reserve capacity is a measure of how long a battery can run a specific load before it is fully discharged. It is an important specification for batteries in vehicles and backup power systems, as it indicates the battery’s ability to provide power in the event of an alternator or power source failure.
How to Calculate Reserve Capacity?
The following steps outline how to calculate the Reserve Capacity.
- First, determine the battery capacity (BC) in ampere-hours (Ah).
- Next, determine the load current (LC) in amperes (A).
- Use the formula RC = (BC / LC) * 60 to calculate the reserve capacity (RC) in minutes.
- 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 (BC) = 100 Ah
load current (LC) = 5 A
