Get longer battery life with a new Lenovo ThinkPad T400 replacement battery. This battery is compatible with the Lenovo ThinkPad T60, T61, R60, R61, T400 and R400 laptops. Additional compatible laptop models and part numbers are listed below.
We use the highest quality lithium-ion battery cells that charge faster and last longer. 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 T400 laptop battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.
You can expect about 5 - 6 hours of run time with this computer battery when new, depending on your energy use. If you are looking for even longer battery run times, check out our extended run battery for your Lenovo ThinkPad laptop (our IBM-T61WXT).