Synergy Digital CMOS/BIOS Battery, Works with Dell Latitude D610 CMOS/BIOS, (Li-Ion, 3V, 200 mAh) Ultra High Capacity, Compatible with Asus 0G4221 Battery - Walmart.com
✩ RTC CMOS Battery for Dell Latitude D610 - Rome Tech
Dell Latitude D610 RAM Replacement - iFixit Repair Guide