Very often, you buy batteries, but you never analyze letters on them.

**What does AH mean on the battery?**

**The Amp Hour (AH) specification provides a measurement of battery capacity. Amp-hour is the rating used to tell consumers how much amperage a battery can provide for exactly one hour. For example, a 10AH battery (or cell) can supply 10 Amps for 1 hour.**

Noe let us analyze in detail:

**What is An AMP Hour?**

**An Ampere-hour (shortened Ah) is the energy charge measure in a battery that will permit one ampere of current to stream for 60 minutes. AMP hour describes the charge capacity of a battery or how much amperage can be delivered at a constant rate as the battery is depleted over the course of one hour. An ampere is a unit of the proportion of the electron stream’s pace or flows in an electrical conductor. One ampere of current represents one coulomb of electrical charge moving past a specific point in one second.**

## AMP-Hour example:

For example, C/5 a battery might safely provide 26.8 amp-hours. This means that it supplies 26.8 amps in the duration of 5 hours without dropping off. Meanwhile, the same battery may safely provide 36 amp hours for a period of 100 hours.

180 ah battery means that if there is a 10A load, 180Ah battery can run for 18 hours, or if we have 1A load, the 180Ah battery can run for 180 hours.

125 ah battery means if there is a 10A load, then 125Ah battery can run for 12.5 hours.

100ah means that a battery can deliver 1 amp of current at the rated voltage (12V in this case) for 100 hours. Alternatively, 2 amps for 50 hours, or 4 amps for 25 hours, or 10 amps for 10 hours.

According to this, if there is a 10A load:

- 150Ah battery can run for 15 Hours.
- 180Ah battery can run for 18 Hours.
- 200Ah battery can run for 20 Hours.

## mAH Battery

**The mAh capacity rating refers to the storage capacity available for a particular battery. A milliampere-hour (mAh) is 1,000th of an Ah and is ordinarily utilized as a proportion of charge in PC batteries. The mAh gives a sign of how long the PC will work on its battery without re-energizing it.** The clock would then be made to represent 60 minutes, thereby presenting a full hour and a quarter as measured by an electric bulb. While the difference is small, it is perceptible and gives rise to an apparent hour slightly longer than the actual one. When an atomic clock measures time, the hours and minutes are both seconds. It thus requires a very sensitive atomic clock to measure the difference, which can be compared to a cheap digital watch.

Amount of electricity used per one billion British thermal units (BTU) of heating or cooling. The US government states the same as 1 kilowatt-hour of electricity equals 29 BTU per BTU of heat, 1 kilowatt-hour of electricity equals 8.35 BTU per BTU of heat. An electric household heater burns heat in the electric meter’s electric circuit. When there is more electrical power available than heat flowing through the electric meter, the electric heater is turned on, raising the temperature.

Let us give one example related to cars:

## Car battery amp hours

An average car battery has a capacity of about 70 amp-hours, specified at a current of 3.5 amps. This means that this battery’s amount of time could continuously supply a current of 3.5 amps to a load would be 20 hours (70 amp-hours / 3.5 amps).