I am in charge of checking our office Automated External Defibrillator and it is time to replace the batteries. Duracell Ultra is the brand in it now. It takes ten size123a lithium manganese dioxide batteries.
Internal markings inside the battery compartment indicate that Duracell, Sanyo, or Varta are the recommended battery manufacturers. Rayovac and Panasonic are specifically noted as NOT recommended.
I live on an island and have been unable to find that size battery in any of the recommended brands. For everyday electronics I might not care, but in this case we really want it to work right if needed.
The one location I’ve found selling that size battery has Titanium Innovations brand. It is the right chemistry but it is built with “PTC protection (a type of thermal fuse).”
So… is our Zoll AED going to blow a fuse in the battery when we really need it if we use these Titanium Innovations batteries? I assume an AED is a high drain device.