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The capacity of a battery is the:
  • A
    no-load voltage of the battery multiplied by its rated output current.
  • B
    amount of Ampere-hour (Ah) that a fully charged battery can supply.
  • C
    intensity withstood by the battery during charging.
  • D
    number of cycles (charging and discharging) that a battery can withstand without deterioration of its cells.
Batteries convert chemical energy into electrical energy by a transfer of electrons from one material to another using the potential difference between the materials. The capacity of a battery is the amount of Ampere-hour (Ah) a fully charged battery can supply. For example, a 5Ah capacity means that the battery will be able to deliver 5 amperes in 1 hour or 2.5 Amperes in 2 hours, or even 10 amperes in 30 minutes.
If two identical batteries are connected in parallel the output voltage will remain the same and the capacity expressed in ampere-hours will double. On the other hand, if the batteries are connected in series, the capacity will remain the same, but the output voltage will double.


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