# Questions tagged [ampere-hour]

A unit of battery capacity configured for easy calculation. The SI corresponding unit is Coloumb ( unit of "C") which is a measurement of charge. A=C/s (A=Amps) so A*hour are dimensionally similar with a scale factor of 60*60=3600. This roughly tells you how much current a battery will supply for how long. Note that this is an estimate of the total power delivered, the voltage of the battery will vary with current level as well as charge level.

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### coulomb and ampere calculation reg

when I am reading the IC datasheet ,operating voltage is they were mentioned 5v,300mA.its means 300mA per sec/min/hour. Because I have to calculate battery power for a circuit. 1 coulomb= 1 ampere. ...
I need to convert the battery capacity from ampere-hours to be Watt hours. I know that $P=VI$ in Watts, however I'm unsure of which voltage I will need to use in order to use this relation; there ...