This Lenovo 52+ battery will run twice as long as the original 3 cell "52" battery. Note: The added cells in this cartridge will protrude to the rear of the laptop about 1 inch.
This new Lenovo 52+ high capacity battery features the highest quality lithium-ion cells and battery components. Li-ion batteries are not subject to the memory effect common with older battery technology. This ThinkPad X220 battery is 100% compatible with the original battery specifications and is individually tested and backed by a 2 year warranty.
You can expect about 4 - 7 hours of run time with this ThinkPad X220T tablet battery when new, depending on your energy use.
This Lenovo 52+ battery replaces the battery for these ThinkPad X220, X220i and X220T Tablets. If you have an X220 Laptop, this battery will not fit as x220 laptops and X220 Tablets are different machines with different batteries. Here you can find the ThinkPad X220 Laptop Battery