Xtend Brand Replacement For Dell Precision M4400 Battery - Newegg.com
Battery 60Wh original suitable for Dell Precision M4400 - sparepartworld.com
Battery For Dell Latitude E6400 E6410 E6500 E6510 Fit Dell Precision M2400 M4400 | eBay
Amazon.com: GHU Premium 87Wh Battery for Dell Latitude E6500, E6510, E6400, M4400 Replacement for KY265 PT434 4M529 KY477- Lasts More Than 5 Hours, Easy Install, UL Tested with 1 Year Warranty and