Honeywell Lynx Touch L5210—Battery Replacement

Follow the instructions below to replace the backup battery in your system's panel. The Honeywell Lynx Touch L5210 panel requires a Honeywell LYNXRCHKIT-SC 7.2 Volt 1100 mA battery, which can be purchased at your local hardware, mass retailer, or battery store. You may also text a Support Representative at 469.513.8685 to order one.

Step-by-Step Instructions:

1. Press the top tabs with a screwdriver, then pull the front faceplate down.

L7000 Honeywell Home Security Panel Top

2. Remove the battery holder screw, then unplug the battery from the circuit board to remove it.

002 Lynx Touch Battery Replacement

3. Remove and replace the Honeywell LYNXRCHKIT-SC 7.2 Volt 1100 mA battery.


The battery can take up to 24 hours to fully charge and the low battery warning may be present until charging is complete. To charge the battery, simply ensure the A/C power is connected to a working outlet while your battery is connected in the panel.

Clear the Panel Alert

See instructions below for how to clear the error alert and stop alert beeping on your panel.

1. The Lynx beeps, and troubles appear on the main screen or with trouble icons. Press Security, then press System to view the trouble condition.

001a Trouble 01 278x156 001b Trouble 02 278x156 001c Trouble 03 278x156

2. Press the home button, then enter your user code to silence and reset trouble conditions. The trouble will not reset until the core problem has been corrected.

002a Lynx Touch L5200 Home Button 278x156 002b Trouble 04 278x156 002c Main Screen 278x156

3. Press Security, press System, then press the back arrow to exit.