What is the recommended practice for labeling batteries installed in equipment?

• A. Attach a printed label with the installation date
• B. No label is required
• C. Label with the purchase date
• D. Write the installation date with a Sharpie

Answer: (D)

Recording the installation date on batteries is important so you can manage maintenance and replacement timing accurately. Writing the installation date directly on the battery with a permanent marker (such as a Sharpie) keeps the date tied to the component itself, so it stays with the battery even if it’s moved to another device or replaced later. This method is typically more durable in the field than a printed label, which can peel, fade, or detach. Labeling with the purchase date doesn’t reflect when the battery was actually installed, which can lead to incorrect service planning. And without any label, you’d risk losing track of when the battery needs to be serviced or replaced.