To change the slide mount angle...· Loosen the two knobs at least 2 or 3 turns.· Rotate the slide mount to the desired angle.· Re-tighten the knobs.14.4 SLIDE MOUNT OPERATIONThe slide mount has been designed for easy insertion and removal of yourGPS 100 if you wish to use the unit in another boat/vehicle, plan at home,or prevent theft.When placing the GPS 100 into the slide mount, you may leave the batterypack installed or remove it for separate storage. If you leave the battery packinstalled, it will provide emergency back up power in the event of vehiclepower failure. When using an external power source, the rechargeablebattery pack will be automatically charged to full capacity by vehicle power.14-6