Amp-hour (Ah) is a unit of electrical charge, representing the amount of current a battery can deliver for one hour. A battery rated at 10 Ah, theoretically, can supply 10 amps of current for one hour, or 1 amp for 10 hours. Determining this capacity involves understanding the relationship between current, time, and the battery’s stated specifications. For instance, if a device draws 2 amps and a battery is rated for 20 Ah, the estimated runtime is 10 hours, assuming consistent current draw and environmental conditions.
Accurately assessing battery capacity is critical for various applications. It allows for predicting equipment runtime, selecting the appropriate battery for a specific power demand, and preventing unexpected power failures. In historical contexts, understanding and quantifying battery capacity has been vital in developing portable electronics, electric vehicles, and off-grid power systems. Precise estimations ensure efficient energy utilization and reliable operation of connected devices.