Laptop battery Lenovo 61Wh 4-cell lithium polymer 5B11N52060

Replacement laptop battery by Lenovo designed as a 4-cell lithium‑polymer pack with a nominal capacity of 61Wh. This battery restores or extends runtime for compatible Lenovo notebooks and is intended to serve as a direct replacement where model compatibility is confirmed. The battery provides stable power for typical mobile tasks and fits the same mounting and connector arrangement as the original unit.

Advantages

The 4-cell lithium‑polymer construction offers a balance of energy density and light weight, yielding reliable runtime without significantly increasing device weight. With a nominal capacity of 61Wh, the battery meets common power requirements for everyday use including browsing, office applications and media playback. Designed to match original form factor and electrical characteristics, it simplifies installation and maintains system power management behavior.

Suitable for

• Extending notebook runtime for travel and meetings
• Replacing a worn or failing internal battery to restore original battery life
• Use in office productivity tasks such as document editing and spreadsheet work
• Streaming video and casual media playback

Key specifications

• Battery type: lithium‑polymer (Li‑Po)
• Configuration: 4 cells
• Nominal energy capacity: 61 Wh
• Form factor: internal notebook battery sized for compatible Lenovo models
• Typical use: provides standard runtime for everyday computing tasks

How to use

Before installation, power down the notebook and disconnect any external power sources. Remove the existing battery following the notebook manufacturer's service instructions or user manual, then install the replacement pack ensuring the connector is seated correctly and the battery is secured in its compartment. After installation, connect the AC adapter and allow the system to perform any initial battery calibration or recognition procedures. Observe system battery status indicators to confirm successful installation.

Recommendations

For optimal performance, use the battery within the device's recommended temperature range and avoid exposing it to extreme heat or moisture. Charge and discharge the battery through the notebook's built‑in power management to preserve longevity. If the notebook will be stored for an extended period, store the battery at roughly 40–60% charge and in a cool, dry place. Verify compatibility with your specific Lenovo notebook model before purchase or installation.