Battery Capacity Calculation

Battery capacity calculation

Power capacity is how much energy is stored in the battery. This power is often expressed in Watt-hours (the symbol Wh). A Watt-hour is the voltage (V) that the battery provides multiplied by how much current (Amps) the battery can provide for some amount of time (generally in hours). Voltage * Amps * hours = Wh.

How do you calculate cell capacity?

If you multiply amperes × time, you get coulombs. Given that one hour is 3600 seconds, then 1 Ah is 3600 ampere-seconds, or (3600 coulombs/second) × seconds, which equals 3600 coulombs of stored charge in the cell. Note that for smaller cells, you may find their capacity measured in milliamp-hours, (mAh).

13 Battery capacity calculation Images

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