Lenovo recommends Windows.

Shopping for laptops and desktops
ThinkPad Battery 12++ (8cell)
Part number: 43R9257

Stay unplugged longer with the help of a spare or replacement ThinkPad system battery. Increase the capacity of your original 4-cell system battery (select models) or carry an extra to extend your unplugged computing time. Its compatible design allows it to be in the system when the system is connected to ThinkPad X200 UltraBase. (For battery life, go to lenovo.com/alldaycomputing)

Features & Benefits:



  • Lithium Ion (Li-Ion) technology
  • Eight-cell, rechargeable system battery, 14.4 V, 4.6 Ah
  • Standard system battery specifications
  • Over-discharge protection


€184.50
Availability: **
Find a dealor
Stay unplugged longer with the help of a spare or replacement ThinkPad system battery. Increase the capacity of your original 4-cell system battery (select models) or carry an extra to extend your unplugged computing time. Its compatible design allows it to be in the system when the system is connected to ThinkPad X200 UltraBase. (For battery life, go to lenovo.com/alldaycomputing)

Features & Benefits:



  • Lithium Ion (Li-Ion) technology
  • Eight-cell, rechargeable system battery, 14.4 V, 4.6 Ah
  • Standard system battery specifications
  • Over-discharge protection
General Part number 43R9257
Description ThinkPad Battery 12++ (8cell)
Power management Battery type(s) Li-Polymer
Battery Battery Types Li-Polymer
Battery Voltage 14.4 V
Power 4.6 Amp/Hr
Limited warranty[7] Limited warranty period One year
Technical Information Supported Software Applications ThinkPad X200t, X200 Tablet, X201t, X201 Tablet, ThinkPad X200 Ultrabase (43R8781)
Environmental Information Maximum Operating YYYY 95 %
Maximum Operating Temperature 35 C
Minimum Operating HumidityXXX 8 %
Minimum Operating Temperature 5 C
Architecture Depth Metric 102.2 mm
Height Metric 12.9 mm
Height US 0.51 in
Weight Metric[2] 0.465 Kg
Weight US[2] 1.03 lbs
Width Metric 293 mm
Width US 11.54 in