Amazon.com: Synergy Digital CMOS/BIOS Battery, Works with Dell Precision M4500 CMOS/BIOS, (Li-Ion, 3V, 200 mAh) Ultra High Capacity, Compatible with Acer 23.22207.041 Battery : Electronics
Amazon.com: Replacement Battery for DELL Latitude E6510 Latitude E6410 Latitude 6400 ATG Precision M4500 Precision M4400 453-10112 P018K 0H1391 KY477 312-7415 W0X4F MN632 312-0215 PT436 312-0754 NM631 (6600mAh) : Electronics