AGPtek&reg;6 cell Laptop Battery Replacement for Lenovo ThinkPad T410 T410I W510 Battery Part Number: ASM 42T4752 51J0499 ASM 42T4703 FRU 42T4702 (Replacement) [Capacity] 4400mAh. [Voltage(V)] 10.8 [Cells] 6 cells. [Color] Black. [Type] Li-ion Replacement for: 42T4733, 42T4235, 42T4731, 42T4757, 42T4737, 42T4753, ASM 42T4752, 51J0499, ASM 42T4703, FRU 42T4702, ASM 42T4756, ASM 42T4796, FRU 42T4791, FRU 42T4751, FRU 42T4755, FRU 42T4797, FRU 42T4793, FRU 42T4795, FRU 42T4817, FRU 42T4819 Fit Model: Lenovo ThinkPad E40, E50, T410, T410I, W510, ThinkPad Edge 14" Series, ThinkPad SL410 Series, ThinkPad SL510 Series. The Replacement Battery come with Full 1 Year warranty,Batteries are in high grade quality and certified by CE and RoHS.