Even though this lock is easy to change, there are a few things you'll want to make sure you have in the right place as you do the job. We'll mention those below.
• There is a black tab on the black right around the lock. Make sure you start with the tab at the 12 o'clock position.
• Using your finger, pull the tab out towards you just enough to allow you to turn the ring left. The ring will stop after turning it approximately 1/4 inch. Note: Do not use an excessive amount of force when pulling the tab out. A lot of force could cause the tab to break off.
• Pull the ring out from around the lock body until it stops. To see how far the ring extends out before it stops, see the picture showing the battery compartment.
• You can see the battery compartment and the wires of the battery connector from the top. Pull the battery out of the compartment.
• Replace the old battery with a new one.
• Slide the new battery into the battery compartment with the bottom facing down.
• Push the ring back flush with the lock body. You will notice the black tab is extending out a bit because it is resting on a metal prong behind it. Note: Be sure the wires of the battery connectors are tucked in so the ring doen't catch and pinch them.
• Turn the ring to the right until the black tab clicks back into place at the 12 o'clock position. Note: If done right, the back metal piece of the plastic tab should be sitting between two small metal prongs.