This is a brand new replacement Lenovo battery for use in the CD bay for X300 series laptops. This additional battery will extend your battery run time another 3-4 hours. This battery is inserted in the bay area where your CD drive is currently located. Longer run times can be achieved by minimizing the power use, especially the screen brightness. 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. 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. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 1 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 2200 mAh. These are the highest capacity Li-ion batteries on the market today and superior to batteries rated at lesser mAh.

This battery replaces the IBM Lenovo ThinkPad X300 bay battery.

Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles). We do not use cheaper battery cells which can wear out in a little as 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery.