A customer walks in holding a coil and a device that clearly don't belong together. You've seen it a hundred times—they bought a replacement coil for a different pod system, and now they're frustrated.

The issue isn't the customer's memory. It's that device families look similar but aren't interchangeable. A pod system from one brand won't accept coils from another, and even within a brand, different models often use different coils.

When you're stocking your shelves, group coils by device family, not by brand. That means physical separation in your storage area and clear labeling at the point of sale. If you carry the LINQ-SLIM and LINQ-PRO, for example, their coils are not the same—even though the devices share a family name.

This is where the compatibility checker comes in. Enter the device model and the coil you're considering, and it'll tell you if they match. That saves you from the "it should fit" guesswork.