Laptop battery Lenovo 3-cell 45Wh 11.58V model 5B11N47497

Replacement laptop battery compatible with select Lenovo notebooks, featuring a 3-cell design and 45Wh capacity at a nominal 11.58V. This battery model 5B11N47497 is intended to restore portable runtime for everyday mobile use, remote work and travel where extended battery life is required. It provides original-spec electrical characteristics to match device requirements and is suitable for replacing worn or failing cells to recover expected operating times between charges.

Advantages

The 3-cell, 45Wh battery offers a balance of capacity and compact size, delivering steady power for typical productivity tasks without adding significant weight. Nominal voltage of 11.58V ensures compatibility with systems designed for this power profile. The replacement unit is designed for straightforward installation and to deliver performance comparable to the factory battery when installed correctly, helping to extend the usable life of the notebook.

Suitable for

• Mobile office work (web browsing, document editing, email)
• On-the-go use and travel where mains charging is intermittent
• Replacing a worn or failing original battery to restore runtime
• Students and professionals needing reliable daytime battery life

Key specifications

• Cell configuration: 3-cell
• Capacity: 45Wh
• Nominal voltage: 11.58V
• Form factor: slim, notebook internal replacement battery
• Intended use: rechargeable lithium-ion battery for compatible Lenovo laptops

How to use

Power down the notebook and disconnect any external power source before starting. Remove the service panel or battery cover according to the laptop manufacturer's instructions, then carefully disconnect the old battery connector from the motherboard. Install the replacement battery into the compartment and reconnect the battery connector securely, ensuring proper alignment with the socket. Replace the cover and fasten screws as required. After installation, charge the battery fully before first use to allow the system to calibrate battery reporting.

Recommendations

Use the replacement battery with compatible Lenovo models only and follow the laptop manufacturer's safety guidelines. Avoid exposing the battery to high temperatures or direct sunlight. Store unused batteries at moderate charge (around 40–60%) in a cool, dry place. If the device will be unused for extended periods, remove the battery when possible and recharge periodically to maintain battery health.