Using the Bicycle or Automotive Mount for an eTrex HCx or Cx Model

As you may have noticed, the battery door that comes with either the bicycle or automotive mount does not fit on the eTrex® HCx or eTrex® Cx outdoor handhelds. These eTrex handhelds are designed to accept the mount without replacing the battery door.

Thus, you will want to use the battery door that came with the device. The battery door that comes with the mounts is designed for the older generation of the eTrex handhelds.

With the original battery door on the eTrex HCx or Cx handheld, you will want to screw on the auxiliary mount adapter. The mount will slide into the auxiliary mount and will click in place.