Battery Run Time Calculator

Enter the total battery capacity in amp hours and the energy usage in watts to calculate the total battery run time.

Battery Run Time Formula

The following equation is used to calculate the total run time of a battery.

T = 10 * a / w

  • Where T is the time in hours
  • a is the amp hours (battery capacity)
  • w is the power output/usage

Example

The following is an example of how to calculate a total battery run time.

  1. First, determine the battery capacity. This is the total energy storage the battery can hold in amp hours. For this example we will say that value is 100 Ah.
  2. Next, determine the power output. This power output is also know as the usage rate and is measure in watts. We will say 50 watts for this problem.
  3. Finally, use the formula to calculate battery run time. 10 * 100 /50 = 20 hours.

FAQ

What is battery run time?

Battery run time is the total amount of time a battery can sustain a certain power output. This run time will depends on several factors including discharge %, battery size, type of batter, and many more.

battery run time calculator

Related Terms

battery run time calculator
battery run time formula
battery run time
how to calculate battery run time
battery runtime calculator
battery runtime calculator watts
12v battery run time calculator
how to calculate ups runtime
12v 7ah battery run time
inverter runtime calculator
amp hour run time calculator
inverter battery runtime calculator
how to calculate ups runtime on battery