The most important specification of a battery is its current rating. The rated capacity of any battery expresses the average amount of current it releases over a period of time under normal use. For example, a 4000Ah battery can deliver 100 A for 40 hours.
The type of battery selected also plays an important role in battery size. Lead-acid batteries have a battery rating proportional to their discharge rate.
For lithium-ion batteries:
For lead-acid batteries:
Check out our other calculators to calculate inductor reactance, generator fault current, and more!