Battery Lenovo SN3RTC FRU04W3253 11.1V 4400mAh replacement for compatible Lenovo laptops

Rechargeable battery pack Lenovo SN3RTC with a nominal voltage of 11.1V and capacity of 4400mAh offers a direct-fit replacement for compatible Lenovo laptops. The battery restores mobile runtime for everyday tasks such as office productivity, web browsing and light multimedia playback. It is designed to match OEM-fit dimensions and use a standard laptop connector for straightforward installation and consistent power delivery.

Advantages

This replacement battery provides reliable power and stable voltage output throughout typical discharge cycles, helping to maintain system performance during mobile use. Its capacity of 4400mAh balances runtime and weight for portable use, and the battery's form factor aligns with the original design to ensure proper fit and secure connection. The rechargeable chemistry supports multiple charge/discharge cycles when used according to manufacturer charging practices.

Suitable for

• Extending laptop runtime for office applications and document editing
• Maintaining productivity during travel and meetings
• Replacing an aged or failing internal battery to restore normal battery life
• Light multimedia playback and web browsing away from mains power

Key specifications

• Nominal voltage: 11.1 V
• Rated capacity: 4400 mAh
• Battery type: Rechargeable lithium-based laptop battery
• Compatibility: Designed for compatible Lenovo laptop models requiring this voltage and form factor
• Physical fit: OEM-style dimensions and standard laptop connector for direct replacement

How to use

Power down the laptop, unplug the mains adapter and remove the existing battery following the laptop manufacturer's service instructions. Insert the replacement battery into the battery bay until it clicks or seats firmly, then reconnect the mains adapter and charge the battery fully before first use to allow the battery management system to calibrate. Use the laptop's power management settings to optimize runtime and battery health during normal operation.

Recommendations

For best long-term performance, charge and discharge the battery according to the laptop manufacturer's guidelines, avoid prolonged storage at full charge or deep discharge, and operate the laptop within recommended temperature ranges. Replace the battery if you notice significant capacity loss or swelling and dispose of the old battery following local battery recycling regulations.