Brand New IBM/Lenovo ThinkPad R40e Series Battery rated at 10.8V,4400mAh, 6-Cell Li-Ion. Replacement battery is guaranteed to meet or exceed original IBM/Lenovo ThinkPad R40e Series battery specifications.

9 Cell Replacement Battery for IBM Thinkpad T40 T41 T42 T43 R50 R51 R52 R50e R50p This is a brand new Extended Run IBM Thinkpad replacement battery. This long run battery will run at least 50% longer than the standard capacity battery that ships standard with your laptop. The added run time is achieved with an additional 3 cells inside the cartridge. This longer running battery will extend to the rear of your laptop about 1 inch. Users of this battery pack experience an additional 1-2 hours of run time over the standard battery. Estimated run time with this battery is 3-5 hours. Longer run times can be achieved by minimizing the power use, especially the screen brightness.The superior Samsung cells inside the battery cartridge will provide longer run times between charges as well as a... Less

IBM Battery for 40Y6799 42T4504 40Y6799 Battery 41+ 42T5246 This is a brand new IBM Thinkpad premium grade replacement battery. The superior Samsung cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity. This laptop battery replacement is typically superior to the original battery and is 100% compatible with your IBM Thinkpad notebook computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 1 year warranty. Brand: Voltage: Battery... Less