CR2016 rtc battery Compaq Armada Real Time Clock Battery 152605-003 New Battery for: HP Business Solutions Notebook [sb] HP NX6000 Series HP NX6100 Series AS WELL AS FOR Compaq Armada M E & V series Notebooks M300 Series M700 Series E500 Series V300 Series EVO N Series Notebook Evo N600c HP Business Solutions Notebook [sb]          HP NX6000 Series HP NX6110 HP NC4010 HP NC6320 HP NC8000 HP NX8220     Hi and Welcome to my Ebay Auctions. We are delighted that you have taken the time and interest in viewing this auction for a new cmos bios battery for several of the HP Compaq Armada and Evo models listed. The peformance of a new cmos battery will bring back the power computing to your notebook that has lost it's date/time sequence. This item is the same battery type as the one that's in connected to your HP Compaq Armada and Evo models listed above, inserted into a small connector that's on the motherboard. This is not the main battery that subs for the AC/DC adapter brick, rather the purpose of this battery is solely for the firmware of the bios chip to maintain date/time clock functions while the notebook is not in use. The cells inside are CR2016 so they will provide ample longevity to your notebook