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What does mAh mean in batteries?

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2012-04-10 14:25:53

mAh is a measure of the amount of charge stored in a cell or

battery (set of cells). One (1) Ah is the equivalent of 1000mAh,

and so the statement can be made that a cell with 2000mAh of stored

charge can supply a device drawing one (1) mA for 2000 hours --

before needing replacement or recharge.

It also means 1/1000*C/s*3600s.(1 milli= 1/1000, C=Unit for

charge, s=seconds) which finally means that a battery rated 1mAh

can hold a charge equal to 3.6 coulombs of charge.

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