Tired of determining the time of the reserve "by eye" or on a cellular calculator?
And if we take into account the nonlinear characteristic of the battery discharge and the dependence of the capacitance on temperature ... Dead end? Not!

Now you can determine the time of the reserve, taking into account all the factors in just a few seconds!
Note: the operating time may differ significantly from the values ​​obtained, depending on the type of battery manufacturer, as well as on the residual capacity of the battery.