Micromall Cmos Memory Battery Compatible with IBM T20 T40 T60 X30 R40 R40e R50 02k6541 02k7087 02k7075 08k8050 08k8216 02k6572 92p0991 92p0986 IBM Thinkpad 570 Series: 570 570e 570x 570z IBM Thinkpad a Series: A20 A20p A20m A21 A21e A21m A21p A22 A22m A22p A23 A30 A30p A31p IBM Thinkpad T Series: T20 T21 T22 T23 T30 T40 T41 T42 T43 IBM Thinkpad R Series: R40 R40e R50 R50e R50p R51 R52 IBM Thinkpad X Series: X30 X31 X32 IBM Xseries: 300 400

From the Manufacturer:
1. No memory effect. Chargeable even if it has not been used up yet.
2. High capacity battery
3. Replace IBM T20 T40 T60 X30 R40 R40E R50
4. With 2 wires and 2 pins connector

Specifications:
1. Battery Type: Lithium
2. Volts: 3V
3. Dimensions: 0.79 x 0.79 x 0.13 inch / 2 x 2 x 3.2 cm (L x W x H)
4. Color: Yellow
5. Will Fix the Following Error Codes:
0250: Systems Battery Error
0251: System CMOS Checksum Bad
0260: System Timer Error
0270: Real-Time Clock Error

Includes:
1 x CMOS Battery

Compatible Part Numberïš
IBM: 02K6541, 02K7087, 02K7075, 08K8050, 08K8216
FRU: 02K6572, 92P0991, 92P0986
Compatible Model:
IBM Thinkpad 570 Series: 570, 570E, 570X, 570Z
IBM ThinkPad A Series:
A20, A20P, A20M, A21, A21E, A21M, A21P, A22, A22M, A22P, A23, A30, A30P, A31P
IBM ThinkPad T Series: T20, T21, T22, T23, T30, T40, T41, T42, T43
IBM ThinkPad R Series: R40, R40e, R50, R50e, R50p, R51, R52
IBM ThinkPad X Series: X30, X31, X32
IBM xSeries: 300, 400