This is a list of terms, abbreviations, and acronyms found on the wiki and forums more generally. Also see this more general RV-related list at Good Sam.
A
A - Amps (amperes). A measure of electrical current.
AH or Ah - Amp-hour. Example: 2.5A x 2 hours = 5Ah.
Note that Ah is voltage-dependent: 5Ah at 12v is 60Wh, while 5A at 24v = 120Wh. For this reason, Wh may be a more “portable” specification.
the capacity of deep cycle batteries is traditionally given in Ah. Example: a 100Ah battery will provide 100Ah from 100% to 0% DoD at a ~5A draw (C/20).