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What does milliamp-hours mean?

Updated: 12/23/2022
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12y ago

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A milliamp-hour is one thousanth of an amp-hour. For example: if you have a fully charged battery of 500 mAh (milliamp-hours), it is able to feed a lamp which draws a current of 500 mA for one hour. It also is able to feed a mobile phone in standby over a period of 50 hours, if it draws a current of 10 mA.

Alternative Answer

A milliampere hour (not 'milliamp hour'!) is one-thousandth of an ampere hour, which is a unit of electrical charge. The SI unit for charge is a coulomb, which is a special name given to an ampere second. So, and ampere hour is 60 x 60, or 360 times larger than a coulomb.

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12y ago
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Q: What does milliamp-hours mean?
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