Get up to 5 hours of battery run time with a brand new 9 cell high capacity ThinkPad T61 R61 T400 widescreen battery. This high capacity ThinkPad 9 cell battery will run 2 hours longer than the original battery.

Note: Because of the additional cells, this battery will be physically larger than the original battery and will protrude about one inch from the rear of the laptop. The battery will still snap into place a

This battery is for the widescreen ThinkPad laptop ONLY. If you have the standard screen version this battery will NOT work. Click here to view that standard version.

We use the highest quality lithium-ion cells and battery components that charge faster, last longer, and weigh less than cheaper, lower quality batteries. The superior South Korean cells inside the battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries.

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.

Each ThinkPad T61 widescreen battery is tested and inspected before shipment and backed by a 30 day guarantee and a 2 Year warranty.

Not all computer batteries have the same capacity and run times. The higher capacity battery cells inside this cartridge have an energy capacity of 7800 mAh. These are the highest capacity Li-ion batteries on the market today and superior to batteries rated at 6600 & 7200 mAh. This battery will deliver 20% more run time than cheaper 9 cell versions and 77% more run time than cheaper 6 cell versions of this battery. If you prefer the 6 cell battery, click here for the standard 6 cell battery IBM ThinkPad (our IBM-T61W).