Lenovo 54.7Wh Internal Li-ion Battery for IdeaPad 5 and Yoga Slim 7 (5B11M90048)

When your Lenovo IdeaPad 5 or Yoga Slim 7 starts losing charge faster than expected, this genuine 54.7Wh internal battery restores all-day productivity. It's the same component used in original factory builds, so you get exact fitment and reliable performance whether you're working from a café, attending back-to-back lectures, or streaming on the couch.

Key specifications

• Battery type: Lithium-Ion (Li-ion)
• Capacity: 54.7 Wh / 4.75 Ah
• Voltage: 11.52 V
• Cells: 4-cell internal pack
• Compatibility: Lenovo IdeaPad 5 14ITL05, IdeaPad 5 15ITL05, Yoga Slim 7 14ARE05, Yoga Slim 7 14ITL05, Yoga Slim 7 15ITL05
• Part number: 5B11M90048
• Condition: New, genuine Lenovo OEM part

Why choose it

This is not a generic replacement—it's the original Lenovo battery built to the same strict standards. You avoid compatibility guesswork, swollen-cell risks, and premature wear. The 54.7Wh capacity delivers hours of real-world use, and because it's internal, it keeps your laptop slim and portable.

Ideal use cases

• Reviving a laptop that no longer holds a charge
• Keeping a spare battery for travel or hot-desking
• Extending the life of a workhorse IdeaPad or Yoga Slim 7
• Professional repair and IT refurbishment projects

Good to know

Installation requires opening the laptop case and disconnecting the old battery. We recommend professional installation unless you are comfortable with laptop internals. Always disconnect the power adapter and follow Lenovo's safety guidelines. The battery is rechargeable and designed for hundreds of charge cycles.