Battery Lenovo Rechargeable 7.5V 46Wh 6‑cell 6135mAh (model 5B10L55039)

Rechargeable replacement battery compatible with select Lenovo laptops, rated at 7.5 V and 46 Wh (6135 mAh) with a 6‑cell configuration. This battery model restores portable power to laptops whose original battery has reduced capacity or failed, allowing continued mobile use and regular charging through the laptop’s power adapter. It is designed to match the electrical and physical requirements of compatible devices and to provide predictable runtime under typical productivity workloads.

Advantages

The battery delivers a nominal voltage of 7.5 V and an energy capacity of 46 Wh, providing a balance between runtime and weight for everyday laptop use. The 6‑cell construction offers stable power delivery and consistent performance during mixed tasks such as web browsing, document editing and light multimedia playback. As a rechargeable replacement, it enables users to restore original battery life without replacing the entire device and integrates with the laptop’s charging circuitry for safe charging and discharge behavior.

Key specifications

• Nominal voltage: 7.5 V
• Energy capacity: 46 Wh
• Rated capacity: 6135 mAh
• Cell count: 6 cells
• Form factor: internal rechargeable laptop battery

How to use

Turn off the laptop and disconnect the power adapter before removing the existing battery, following the device manufacturer’s service instructions. Align the replacement battery with the laptop’s battery bay or connector and secure it according to the laptop model’s installation method. Reconnect the power adapter and allow the battery to charge fully before first extended use to help calibrate the charge indicator. Use the laptop’s power management settings to monitor battery health and remaining runtime.

Recommendations

Charge the battery using the laptop’s original or manufacturer‑approved power adapter and avoid exposing the battery to extreme temperatures. For prolonged storage, keep the battery partially charged (around 40–60%) and check charge level periodically. If the battery shows swelling, leakage, excessive heat, or fails to hold charge, stop using it and follow proper disposal or recycling procedures in accordance with local regulations.