How Do You Calculate Battery Capacity. For a 18650 2500mAh25Ah battery with a device that draws 500mA05A you. Input Numbers Into a Battery Amp Hour Calculator or the Formula Below.
IS specification gives the capacity obtained is 717 Therefore capacity of battery rated at 10 hr is 9075 717 127 Ah You should choose a battery having capacity near to 127 Ah say 130 Ah rated at 10 hr. For a 18650 2500mAh25Ah battery with a device that draws 500mA05A you. This calculator will tell you what battery size you need.
It is that simple.
If you have the chargedischarge curve the battery capacity can reasonably be calculated from the battery. Each battery has a chargedischarge curve. If the same battery lasts for 2 hours then its 2000 mAh battery. It is also dependent on how long the battery is charged for and the age of the battery.
