Ampere-hour
Videos
An ampere-hour or amp-hour is a unit of electric charge, recommended for use in batteries and electrolytic devices. It has dimensions of electric current multiplied by time and corresponds to the char
Rechargeable NiMH 1.2 V batteries Top: AA battery (2500 mA⋅h) Bottom: AAA battery (1000 mA⋅h)
Energy conversion efficiency
Videos
Energy conversion efficiency is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical, electric po
Ampere-hour
…application. The above examples are a useful reference, but in practice the usable output is not identical, and can vary greatly. For instance: Losses: Energy transfer is never 100% efficient, there is always some loss between energy stored and energy output, how much depends on the circumstances. Battery mechanics: Many batteries have a…
The absolute irradiance of four different gases when used in a flashtube. Xenon is by far the most efficient of the gases, although krypton is more effective at a specific wavelength of light.