Battery Lenovo 01AV401 42Wh Li‑ion 3375mAh replacement for compatible laptops

Rechargeable Li‑ion battery Lenovo 01AV401 delivers 42Wh (3375mAh) capacity as a direct replacement option for compatible Lenovo laptops. Designed to restore portable runtime and support standard charging and discharge cycles, this battery fits devices that accept the same physical format and electrical specifications. It provides a straightforward swap-in solution for users seeking to return mobility to a laptop whose original battery no longer holds an adequate charge.

Advantages

This replacement battery offers a rated 42Wh energy capacity in a compact Li‑ion format, allowing longer unplugged operation compared with depleted cells. It is manufactured to match the mechanical dimensions and connector placement required for compatible laptop models, enabling easy installation without modifications. The battery supports normal charging circuitry and discharge behavior, providing predictable runtime and maintaining compatibility with the laptop’s power management routines.

Suitable for

• Replacing an aging or failed internal battery in compatible Lenovo laptops
• Restoring mobile use time for business, study, or travel
• Keeping a secondary battery on hand for extended remote work or field use

Key specifications

• Battery type: Lithium‑ion (Li‑ion)
• Rated energy: 42Wh
• Rated capacity: 3375mAh
• Form factor: laptop internal replacement pack (OEM-fit physical design)
• Compatibility: laptops accepting the same physical and electrical battery format

How to use

Power off the laptop and disconnect any external power source before replacing the battery. Remove the access panel or rear case following the device manufacturer’s service instructions, then disconnect the old battery from the motherboard connector and remove it. Install the replacement battery by seating it in the same position, reconnecting the battery cable securely to the board, and reassembling the device. After installation, charge the battery fully using the original charger and allow the operating system to perform any battery calibration or power management updates.

Recommendations

For safe operation, use the laptop manufacturer’s recommended charging adapter and avoid exposing the battery to extreme heat or moisture. Store the battery at moderate charge (around 40–60%) if it will not be used for extended periods. Dispose of the old battery according to local electronic waste regulations and do not attempt to disassemble or puncture the replacement battery.