Laptop battery Lenovo 45Wh 3-cell model 5B11N47485, replacement for compatible Lenovo notebooks

Rechargeable laptop battery designed as a direct replacement for compatible Lenovo notebooks. This 45Wh, 3-cell battery restores mobile runtime for systems that need longer unplugged use or have degraded original batteries. The pack is intended for users who require reliable secondary power for travel, business, or troubleshooting intermittent power issues.

Advantages

This 45Wh 3-cell battery offers a compact form factor and an energy capacity tailored to balance weight and run time. It provides predictable discharge behavior and straightforward installation without requiring special tools. As a compatible replacement cell pack, it allows users to quickly recover portable battery life and continue working away from mains power.

Suitable for

• Replacing degraded or worn original laptop batteries
• Extending unplugged run time for travel or field work
• Carrying a spare battery for business trips or presentations
• Troubleshooting power-related issues on compatible Lenovo notebooks

Key specifications

• Capacity: 45Wh
• Cell count: 3-cell configuration
• Chemistry: lithium-ion rechargeable cells
• Form factor: slim, notebook-compatible battery pack
• Intended use: replacement battery for compatible Lenovo laptops

How to use

Power down the notebook and disconnect any external power source before replacing the battery. Remove the old battery following the laptop manufacturer’s access procedure, replace it with the new 45Wh 3-cell pack and secure according to the device’s fastening method. After installation, connect the mains adapter and allow the system to recognize and charge the new battery; a full charge cycle is recommended before extended use. Follow your laptop’s battery calibration and power management guidance for optimal performance.

Recommendations

Store and operate the battery within the manufacturer-recommended temperature range, avoid short-circuiting the contacts, and use the laptop’s original or certified charger. For long-term storage, keep the battery at about 40–60% charge and in a cool, dry place. Dispose of used batteries through appropriate recycling channels.