One thing to consider when changing the battery is its size. Battery sizes can vary by mere millimeters, depending upon the manufacturer. If the new battery is smaller than the original one, you may need to bend the battery contacts to size to get it to work.
Remove the battery and place a screwdriver between the contact and the compartment wall.
Gently bend the contacts towards the + and – symbols.
Reinsert the battery and close the Extra Big and Loud Timer’s case.
If a new battery doesn’t resolve the issue, please let us know.