How long does a battery with 4500mah last?

Answer 1

How long a battery will provide power depends on the rate at which electricity is drawn from the battery. The slower the power is removed, the longer it will last, and the faster it is removed, the shorter the duration. The "Mah" stands for: "Milli" means one thousandth, the "a" stands for Amps, and the "h" stands for hours. The 4500 Mah rating means that the battery is capable of delivering 4,500 Milliamps [or 4.5 Amps] for one hour. 4,500 Milliamps is the same as 4.5 Amps. Since how long a battery can deliver power depends on the withdrawal rate, here are some examples of delivery times in relation to some withdrawal [discharge] rates: * The 4500 Mah battery will provide 4,500 Milliamps [4.5 Amps] for one hour, or * 9,000 Milliamps [9 Amps] for one half hour, or * 18,000 Milliamps [18 Amps] for one quarter of an hour [15 minutes], or * Going in the opposite direction, at a discharge rate of only one [1] Milliamp per hour, then it will last for 4,500 hours!