Lenovo 45N1738 laptop spare part Battery

The Lenovo 45N1738 battery is a Lithium‑Ion replacement battery designed to provide reliable, long-lasting power for compatible Lenovo laptops. With a nominal capacity of approximately 45 Wh, this black battery offers extended runtime for everyday tasks such as web browsing, document editing and media playback. The lightweight construction and direct-fit design enable straightforward installation without tools on supported models.

Advantages

This Lithium‑Ion battery delivers a balance of energy density and weight, helping to extend mobile usage while keeping the laptop portable. Its direct-fit form factor simplifies replacement, and the standardized chemistry supports stable charge and discharge cycles for consistent performance over time.

Suitable for

• Replacing an exhausted original battery in compatible Lenovo laptop models
• Extending working time for remote or mobile use
• Using during travel, meetings or lectures where mains power is unavailable

Key specifications

• Battery technology: Lithium‑Ion (Li‑Ion)
• Nominal capacity: 45 Wh (approximate)
• Colour: Black
• Form factor: Internal laptop battery, direct-fit design

How to use

Power down the laptop and disconnect any external power source before replacing the battery. Remove the access panel or release the battery latch according to the laptop manufacturer's instructions, then install the Lenovo 45N1738 battery in the correct orientation until it seats securely. Reattach the panel or latch, reconnect power if needed, and power on the device. Allow the battery to charge fully before first extended use to calibrate the charge indicator.

Recommendations

Store the battery in a cool, dry place and avoid exposing it to extreme temperatures. For optimal lifespan, avoid keeping the battery at full charge or fully depleted for prolonged periods; periodic partial discharges and recharges help maintain capacity. Use the battery only in compatible Lenovo models and follow safety guidelines provided by the laptop manufacturer.