10.8V, 6600mAh, Li-ion Battery fits Hp, 4410t Mobile Thin Client, Probook 4405, 71.28WhBattery Fits Models: 4410t Mobile Thin Client, Probook 4405, Probook 4406, Probook 4410s, Probook 4411s, Probook 4412, Probook 4413, Probook 4415s, Probook 4416s, Probook 4418 Battery Part Numbers: 513128 251, 513128 361, 535806 001, Hstnn db90, Hstnn xb90, Nz374aa Our battery should have the exact dimensions and fitment as the original battery; the fit and finish are checked before dispatch. The products we supply are exceptionally well designed;