Just to be complete in this thread in case anyone else needs this info. The original component on the PCB is a DB-5R5D104 - Elna, 0.1F 5.5v Supercapacitor. Thanks again for pointing me out to the location @sparkymarka
Thx. It was printed as a C so I thought it to be a capacitor. I'll open the unit again and check if I can read the specifications on it to order and replace it. The memory link is closed indeed
I have an Ademco Microtech Galaxy 18 alarm that looses memory on a full power outage. can someone point me to a replacement battery that can be soldered on the PCB? Below a screenshot from the PCB where I can't find the battery: