Simon XT - Replace Backup Battery

1. Remove screw at the top of panel then place thumbs on tabs to swing cover down


2. Flip front cover down


3. Apply pressure to spread the battery clips then remove and disconnect old battery


4. Connect new battery red wire to red terminal and black wire to black terminal


5. Install new battery then close front cover


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  • Four adults have attempted to insert the replacement battery with no success. The replacement was sent by Brinks. We cannot get the battery to “snap into place”. It seems to be too large for the compartment, but my machinist husband measured them with his micrometer and they are the same. Any tricks I am unaware of? Amy

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  • Hi Amy,

    That battery definitely sits snug in the battery compartment. (And :) it can be tough to remove). Checkout this video below and let me know if it helps.

    How to replace your Simon XT v1 and v2 panel battery (Video)


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