Internal laptop battery Lenovo 5B10W13895 45Wh 4120mAh

Internal laptop battery Lenovo 5B10W13895 45Wh 4120mAh is a replacement internal battery designed for compatible Lenovo notebooks. It offers a 45Wh energy capacity and a nominal charge of 4120mAh to restore portable power for everyday use, office work and travel. The battery is intended as an OEM-compatible spare that installs in place of the original internal pack, returning runtime and maintaining device portability without changing the notebook’s external profile.

Advantages

This internal battery provides reliable runtime through a 45Wh energy rating and a 4120mAh nominal capacity, supporting typical productivity tasks and media playback. It is manufactured to match the physical dimensions and connector configuration of compatible Lenovo notebooks for straightforward replacement. The design balances energy density and safety features to meet standard laptop power requirements while keeping the battery compact and lightweight.

Suitable for

• Office work: word processing, spreadsheets, email
• Remote work and study: video calls, document editing
• Travel: extended use away from mains power
• Light multimedia playback and web browsing

Key specifications

• Energy capacity: 45Wh
• Nominal charge: 4120mAh
• Type: internal lithium-ion laptop battery
• Compatibility: designed for compatible Lenovo notebook models that accept this form factor and connector
• Form factor: internal pack designed to fit the original battery compartment

How to use

Turn off the notebook and disconnect any external power source before beginning replacement. Open the laptop’s service panel or remove the bottom cover according to the device manufacturer’s instructions, taking care to avoid static discharge. Remove the original internal battery by disconnecting its cable and unscrewing any retaining fasteners, then install the replacement pack in the same orientation and reconnect the cable. Reassemble the case, reconnect mains power and allow the new battery to charge fully before first extended use to ensure proper calibration.

Recommendations

Store and use the battery at moderate temperatures; avoid prolonged exposure to heat or humidity. Use the notebook’s original charger or a compatible power adapter to charge the battery. Follow the laptop manufacturer’s safety guidelines for internal battery replacement and disposal of the removed battery at an appropriate recycling facility.