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 - 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).
• AGM Absorbent Glass Mat battery, a type of Valve Regulated Lead Acid battery

• BM - battery monitor
• BTU - British Thermal Units, a measurement of heat.

• C - rated capacity in Amps.
• CAR Current/charge acceptance rate; the amount of current the battery will take under present conditions
• CC - [solar] charge controller
• CRVL - cheap rv living forum

• DoD - Depth of Discharge

• endAmps - the amount manufacturer-specified amount of measured current in Amps that signals the end of the Absorption stage of charging.

• FLA - flooded lead acid battery
• FT - full time (lives in the camper)

• GC - 6v golf cart battery
• GVWR - Gross Vehicle Weight Rating: maximum weight the vehicle can carry
• GCWR - Gross Combined Weight Rating: maximum towable weight
• GAWR - Gross Axle Weight Rating: maximum weight each axle can carry

• Imp - current (I) the panel puts out at Vmp. Vmp X Imp = Pmax
• IRL - in real life; in practical terms
• Isc - max current (I) the panel can output. This occurs when the panel wires are short circuited.

• LFP - LiFePO4 lithium batteries

• MPPT - Maximum Power Point Tracking, a type of charge controller

• normally closed (NC) - a relay where the unpowered (default) condition is closed, i.e. relayed circuit is complete and electricity can flow
• normally open (NO) - a relay where the unpowered (default) condition is open, i.e. relayed circuit is broken and electricity cannot flow

• Pmax - maximum power the panel can output
• PT - part time (ie, lives in a vehicle part time)
• PV - “photovoltaic”, ie solar panel
• PWM - Pulsed Width Modulation, a type of charge controller

• S&B - Sticks & Bricks (house or apartment)
• SC - solar controller
• SCC - solar charge controller
• SKP - Escapees RV club (say the acronym aloud)
• SoC - state of charge
• SoH - State of Health, a measure of the general health of the battery. Often expressed in terms of its original capacity rating in Ah.

• TLA - three letter acronym
  • Alternately, “Three Letter Agency”, aka the fun police (FBI, CIA, NSA, ATF, etc)
• TnTTT - Teardrops and Tiny Travel Trailers forum
• Toad - a second vehicle which is towed
• TT - travel trailer
• TV - tow vehicle, usually a pickup truck

• Vabs - Voltage setpoint for the Absorption stage of charging.
• Vfloat - Voltage setpoint for the Float stage of charging.
• Vmp - Voltage at which a solar panel produces maximum power under present conditions.
• Voc - Maximum Voltage the solar panel can output. This occurs in an open circuit condition¹⁾
• VSR - Voltage Sensing Regulator, a smart kind of battery isolator

• Wh - Watt-hours. Example: 32w x 3 hours = 96Wh. Like Ah, but not voltage-dependent.
• WM - walmart