Lenovo ThinkPad 11.55V 4420mAh Li-Ion Notebook Battery Replacement

The Lenovo 5B10W13905 is a genuine lithium-ion battery created for the ThinkPad T490 notebook, offering a straightforward way to refresh your laptop’s runtime without replacing the entire system. It installs in minutes and instantly delivers stable power, so you can keep working, streaming, or presenting wherever the day takes you.

With an 11.55 V output and a 4420 mAh capacity, the battery supplies consistent energy that lets the T490 handle everyday workloads such as document editing, video calls, and light multimedia tasks. Its cells are engineered to charge efficiently, which means shorter waits at the outlet and more time unplugged.

This replacement makes sense for a wide range of users. Students can move from class to the library without hunting for wall sockets. Remote professionals gain confidence during coffee-shop work sessions and cross-country flights. IT teams can extend the service life of fleet laptops, avoiding the cost and downtime of a full device swap.

At just 7.76 oz, the battery adds almost no weight to your bag, and its Lenovo-tested construction supports daily charge cycles for long-term value. Once installed, it blends seamlessly with the T490’s chassis, preserving the laptop’s slim profile and reliable performance.

• 11.55 V output provides steady power for the ThinkPad T490
• 4420 mAh lithium-ion capacity supports extended work sessions
• Designed to charge quickly, keeping downtime to a minimum
• Fits Lenovo ThinkPad T490 notebooks with a factory-match form factor
• Weighs only 7.76 oz, adding minimal bulk to your setup