Lenovo ThinkPad T400s / T410s Battery (42T4691 / 42T4832)

Lenovo T400s / T410s original battery is a genuine OEM replacement battery designed specifically for the slim “S-series” ThinkPad models. It delivers stable and efficient power output suitable for business use, office work, browsing, and lightweight professional applications. Built with high-quality lithium-ion cells, it ensures safe charging, consistent performance, and longer cycle life compared to low-quality aftermarket batteries. This original battery is commonly used to replace worn-out or faulty batteries in ThinkPad T400s and T410s laptops, restoring portability and reliable backup power. It is important to note that the “S” slim series uses a different battery design from standard T400/T410 models and is not interchangeable.