Battery type: Li-ion; Capacity: 2600mAh Voltage: 14.8V;Cells: 4-cell. The battery is durable and has overcurrent protection, anti-overcharge, anti-overdischarge and temperature control functions. Fit for Models: LENOVO G400s G405s G410s G500s G505s G510s S410p S510p Z710 G50 G50-30 G50-45 G40-30 G40-45 G40-70 G40-70M G50 G50-30 G50-45 G50-70 G50-80 G50-70M. Compatible Models: 121500171 121500172 121500173 121500174 121500175 121500176 90202869 L12L4A02 L12L4E01 L12M4A02 L12M4E01 L12S4A02 L12S4E01 G400s G40-30 G40-45 G405s G40-70 G40-70M G410s G50 G500s G50-30 G50-45 G505s G505s G50-70 G50-70A G50-70M G50-75 G50-80 G510s G510s S410p S410p S435 S510p S510p Z40 Z40-70 Z40-75 Z50 Z50-70 Z70 Z70-70 Z70-80 Z710 Security & Reliability: Our batteries are assembled from top quality material and circuit boards to ensure fast charges and low power consumption, 100% New from Manufacturer, Overcharg