Laptop battery Lenovo 4-cell 71Wh 15.36V (MPN 5B11N47513)

Replaceable Lenovo laptop battery with 4 cells, 71Wh capacity and nominal voltage 15.36V. This battery is designed to restore portable power to compatible Lenovo notebooks and to provide extended runtime for work, travel and field use. It meets original-spec dimensions and electrical characteristics for straightforward installation and reliable operation in supported laptop models.

Advantages

The 71Wh capacity delivers longer unplugged operation compared with lower-capacity units, helping to extend productivity between charges. The 4-cell construction balances energy density and weight for a practical compromise between runtime and portability. Compatibility with specified Lenovo systems ensures proper fitment, electrical matching and battery management support to maintain charging and reporting functions.

Suitable for

• Business users who need extended runtime for meetings, travel and remote work
• Students requiring reliable battery life for lectures and study sessions
• Field technicians and mobile professionals working away from power outlets
• Anyone replacing a worn or degraded battery in a compatible Lenovo notebook

Key specifications

• Cell count: 4-cell configuration
• Capacity: 71 Wh (watt-hours)
• Nominal voltage: 15.36 V
• Form factor: rechargeable internal laptop battery designed for Lenovo notebooks
• Intended function: primary power source for portable operation and battery-powered runtime

How to use

Power off the laptop, disconnect any external power supply and remove any covers or latches protecting the battery compartment according to the notebook's service instructions. Slide or unscrew the battery following the device-specific procedure, then insert the replacement battery until it locks in place. Reconnect the AC adapter and allow the battery to charge fully before first use to ensure correct calibration. After installation, verify battery status in the operating system's power management interface and check for firmware or BIOS updates that may affect battery reporting.

Usage recommendations

To prolong service life, avoid deep discharges and prolonged storage at full charge; store the battery at around 40–60% charge if the laptop will be unused for long periods. Use the original or a compatible Lenovo AC adapter for charging and follow the laptop manufacturer's maintenance guidelines for battery calibration and firmware updates.