Q: What is battery capacity?
A: Battery capacity is the amount of charge your battery can hold.
i.e. If you have a 50 amp/hour battery then when it is new, it will supply 50 amps for a period of 1 hour (100%) capacity.
After some time, the capacity may drop to 75%, then the battery can only supply 50 amps for a period of 45 minutes.
