guarantee of reliability

This type of battery is less common today, but the battery is ideal for a smoke detector as mentioned in the package or a remote control system for example. I rarely had a problem with Duracell batteries, the brand is my guarantee of reliability and long service life (even if their ads always exaggerate a little). This product comes with a basic tester, beware: it is integrated in the back of the carton, so remove the battery without tearing it if you want to use.