battery capacity INFINITI QX80 2021 Towing Guide
Page 22 of 26
 
 
 
 
 
2021 INFINITI Towing Guide  
 
 
21 Other Recommendations and Information – Towing performance and speed are 
affected by vehicle payload, tow weight, road grades, and weather conditions, 
including high temperatures. See your vehicle owner’s manual for details. 
 
TOWING GLOSSARY  
 
  
BALL MOUNT A bar that holds the hitch ball and is inserted into the hitch receiver.  
BREAKAWAY SWITCH A safety device using a trailer battery that automatically applies the trailer’s 
brakes if it should accidentally become separated from the tow vehicle.  
A breakaway switch may be used with both electric or surge trailer brake 
systems. 
  BUMPER HITCH A reinforced bumper designed to accommodate a hitch ball. 
  ELECTRIC TRAILER  
BRAKES When the brakes on a tow vehicle are applied, an electric current is sent to 
an actuator which applies the trailer’s brakes. 
  ELECTRIC TRAILER  
BRAKE CONTROLLER A device that controls the electric trailer brakes. 
  GROSS AXLE  
WEIGHT RATING 
(GAWR) The maximum amount of weight each vehicle axle (front and rear) is 
designed to safely carry.     
   GROSS COMBINED  
WEIGHT RATING 
(GCWR) The maximum allowable combined weight of the vehicle and trailer, 
including passengers and all cargo. 
   GROSS VEHICLE 
WEIGHT RATING 
(GVWR) The maximum allowable weight of the vehicle, including passengers, cargo, 
fuel, hitch, trailer tongue load, and any optional equipment. 
   HITCH BALL 
 A ball that connects the trailer to the tow vehicle hitch that provides the 
means by which the trailer pivots during cornering.  Available in a number of 
sizes and weight capacities, it must correspond to the trailer coupler size, and 
have a sufficient capacity rating for the trailer being pulled. 
   RECEIVER HITCH A frame- or structure-mounted hitch with a receiver that allows removal of the 
ball mount. 
   SAFETY CHAINS/CABLES Provides an emergency connection between the tow vehicle and the trailer, 
should the trailer become disengaged for any reason. 
   SURGE BRAKES 
 Hydraulic-type braking system activated by inertia. As the tow vehicle begins 
to brake, the trailer pushes against the hitch ball, consequently activating the 
trailer brakes.   
   TRAILER 
TONGUE/COUPLER The part of the trailer that extends forward to meet the tow vehicle, and 
carries the coupler assembly.