If not there may be internal damage.
How to fix a wall clock that runs slow.
It is possible to install the battery upside down where the battery is.
To slow down the clock loosen the adjustment nut turn it toward your left.
Gently take off the compartment and take a look at the connections.
If so replace the cables with new ones and see if it works or not.
To speed up the clock tighten the nut turn it toward your right.
If they are getting a collision or there is unnecessary friction among them smoothen out the edges of the handles with a piece of cloth.
If your clock is running slow then there might be an issue with the wiring.
The clock will run slower.
Turning the screw to the left will lower the pendulum slightly and slow down the clock.
Open the door and bring the pendulum all the way to the side then let.
This screw regulates the speed of the clock.
How to troubleshoot wall clocks.
How to repair an old wall clock if your wall clock is off you will definitely replace the new battery if it remains dead.
You should hear a ticking sound.
Again you should also check the electric clocks handles.
Do you see any damage to the wires.
Each turn of the screw slows the clock by two minutes per 24 hour period.
Swing the pendulum on the inside of the clock if it has a pendulum.
Use the fingers of your dominant hand to gently turn the regulation screw.