This is a generic, equivalent one, 100% compatible! 10.80V 5200mAh replacement/equivalent Rechargeable Li-ion battery is 100% compatible with Lenovo FRU 42T4511 ThinkPad R500 T500 W500 R61e Series, Brand new, one year warranty!

Replaces the following Lenovo battery part numbers:
FRU 42T4511

Compatible with the following Lenovo Laptop models:
ThinkPad R500,
ThinkPad T500,
ThinkPad W500

ThinkPad R61 Series(14.1" & 15.0" standard screens and 15.4" widescreen)
ThinkPad R61 8914, ThinkPad R61 8918,
ThinkPad R61 8932, ThinkPad R61 8942,
ThinkPad R61 8943

ThinkPad R61e Series(15.4" widescreen)
ThinkPad R61e 7649, ThinkPad R61e 7650

ThinkPad R61i Series(14.1" & 15.0" standard screens and 15.4" widescreen)
ThinkPad R61i 7650, ThinkPad R61i 8918,
ThinkPad R61i 8932, ThinkPad R61i 8943

ThinkPad T61 Series(14.1" standard screens and 15.4" widescreen)
ThinkPad T61 6457, ThinkPad T61 6460,
ThinkPad T61 6466, ThinkPad T61 8889,
ThinkPad T61 8891, ThinkPad T61 8895,
ThinkPad T61 8897, ThinkPad T61 8898

ThinkPad T61p Series(14.1" standard screens and 15.4" widescreen)
ThinkPad T61p 6459, ThinkPad T61p 6460,
ThinkPad T61p 8889, ThinkPad T61p 8891

Specifications:
◆ Product type: generic/equivalent
◆ Voltage: 10.8V / 11.1V
◆ Capacity: 5200mAh
◆ Dimension: 205.25 x 79.50 x 21.10 mm
◆ Battery Composition: Li-ion
◆ Condition: brand new, 1 year warranty!
◆ No memory effect, Over-charge protection, Short-circuit protection.

Notice:
If your battery part NO. or your machine model NO. are not listed in the description, our battery may still fit your laptop. Therefore, please feel free to contact us to confirm the compatibility.