Synergy Digital CMOS/BIOS Battery, Works with Dell Precision M90 CMOS/BIOS, (Li-Ion, 3V, 200 mAh) Ultra High Capacity, Compatible with Asus 0G4221 Battery
✓Laptop Battery for Dell Inspiron 6000 9200 9300 XPS M170 M1710 Precision M90 PC | eBay
Dell Precision 15 (3541) original Battery 51Wh - sparepartworld.com
Support for Precision M90 | Documentation | Dell India