This brand new Lenovo replacement laptop battery features lithium-ion cells. This battery is NOT compatible with the Lenovo T400 and T410 battery, the T400 and T410s uses a different battery than the T410. please ensure the model number before placing your order.Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 1 year warranty.

You can expect about 2 hours to 4 hours of run time with this computer battery when new, depending on your energy use.

Like all Li-ion primary batteries, your run time will decline over time.

This battery replaces the IBM Lenovo ThinkPad T400s, T410s, T410si series computer batteries.

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.