To test the electrical life of a magnetic latching relay properly, buyers should do more than repeat no-load set/reset pulses. They should build a test around the real load, real coil-drive method, real switching frequency, and real temperature conditions, then monitor contact resistance and operating characteristics as the cycles accumulate. The goal is not just to produce a big number. The goal is to learn whether the relay will still switch safely and predictably after the exact kind of stress the final product will impose.