Battery Life Calculator
The output of this calculator is an estimate, not a guarantee.
Capacity is automatically derated by 15% to account for some self discharge.
Other factors such as temperature can extend or shorten the battery life.
mAHr Capacity of typical
batteries that we're
likely to use:
|AAA|| 1200 (Alkaline)
|AA|| 2700 (alkaline)
|C|| 8000 (alkaline)
|D|| 12000 (alkaline)
19000 (Lithium-Primary) 3.6V
|9V Transistor|| 565 (alkaline)
|6V Lantern||26000 (alkaline)|
|CR2032||240 (Lithium-Primary) 3.6V|
|CR2016||90 (Lithium-Primary) 3.6V|
|1/10 D||1000 (Lithium-Primary) 3.6V|
|4 Farad Cap||1 (loses 1 volt in 1 hour at 1mA)|