AnD 0 Posted October 10, 2010 If I unplug the main power of the DVR then I have to set up the time and date if I restart it, so I think the battery is empty but I was wondering where I can find it on the mainboard of the dvr. I already looked for it but can't find it. Who knows where the battery is positioned ? I have seen somewhere that the battery type is a MS621FE. Share this post Link to post Share on other sites
