Battery Type: Lithium-ion

Volts: 10.8V,

Capacity: 4200mAh

The battery is compatible with the following:

ThinkPad 600, 600A, 600D, 600E, 600X, 660 Series

Replace the following part number:

02K7016, 02K7018, 10L2158, 10L2159, 12J2464, 12P4064, 12P4065