Battery Replacement - Audiovox Prestige APS99BT3 Owner's Manual

BATTERY REPLACEMENT:

The transmitter incorporates a small red LED built into the case. This LED can
be used to indicate battery condition. You will notice a decrease in transmitter
range as the battery condition deteriorates. To replace the battery...
1. Remove the transmitter cover by removing the small screw from the back
of the transmitter case.
2. Remove the discharged battery, making note of the orientation of the + and
- contacts, and dispose of properly.
3. Install the new (type GP23A) battery, taking care to orient the + and -
contacts properly.
4. Replace the transmitter cover, taking care not to damage the LED or
switches on the circuit board.