The GC003 X-Connect 12V Male Plug Accessory is compatible with G750, G1100, G3500, G7200, and G4 chargers, as well as GENIUS1, GENIUS2, GENIUS2X2, GENIUS2X4, GENIUS5, and GENIUS10. It features an LED indicator that displays when the 12-volt auxiliary port is active. Not compatible with NOCO Boost or Boost X UltraSafe Lithium Jump Starters.