Which labeling method is preferred by some inspectors for labeling batteries?

• A. Date installed
• B. Label maker
• C. Engraving
• D. Permanent marker

Answer: (D)

Labeling batteries for maintenance needs to stay legible and durable across the system’s life. Writing directly on the battery with a permanent marker satisfies that need by providing a clear, easy-to-read record without relying on adhesive materials. It avoids the common problems adhesives can have, such as peeling, fading, or detaching in moisture or heat, which can make dates or notes disappear. A permanent marker also allows you to update information quickly if a replacement date or status changes, simply by adding or overwriting markings.

Using a label created by a label maker introduces adhesive labels that can peel or degrade over time, especially in environments with temperature and humidity fluctuations. Engraving on a battery isn’t practical for most common battery shapes and housings and can be difficult to apply evenly; it can also risk damaging the surface or affecting warranties. Simply writing with a permanent marker provides a straightforward, inspector-friendly approach that keeps critical installation information readily visible.