How to replace the call button battery

Updated October 28, 2026

The call buttons use a replaceable 23A battery. Check the marking on your unit before buying a replacement.

Replace and test

Note the button's table number and have its paired watch ready.
Open the battery compartment using the appropriate screwdriver. Keep the screws together.
Remove the old battery. Fit the same specified type, following the + and − markings inside the compartment.
Close the cover securely without forcing the screws.
Press the button and check the correct table appears on each watch that should receive it.
If the call does not appear, check the battery orientation, watch charge and reception. Repeat pairing if needed.

Follow your local battery collection instructions for disposal. Keep batteries away from children.