Battery Dell KWWW4 38Wh 2-cell lithium-ion replacement for compatible Dell laptops

Rechargeable 38Wh 2-cell lithium-ion battery Dell KWWW4 is designed as a replacement power source for compatible Dell laptops. It restores portable power for everyday mobile use, delivering typical runtime for office applications, web browsing and light multimedia. The battery uses a compact OEM-compatible form factor for straightforward installation and aims to return a laptop to reliable on‑battery operation without altering device performance.

Advantages

This 2-cell lithium‑ion battery provides a balance of energy density and compact size suitable for portable notebooks. With a rated capacity of 38Wh, the pack offers predictable runtime under normal productivity loads and supports consistent voltage output for stable system operation. The design follows the original equipment dimensions and connector configuration to simplify replacement and minimize setup time. The battery is rechargeable and intended for multiple charge/discharge cycles when used and stored according to manufacturer guidelines.

Suitable for

• Replacing a depleted internal battery in compatible Dell laptop models
• Restoring reasonable on‑battery runtime for office work and web browsing
• Users who need lightweight, compact battery capacity for travel or remote work
• Service centers performing battery swaps or maintenance on supported notebooks

Key specifications

• Chemistry: Lithium‑ion (Li‑ion), 2 cells
• Nominal energy: 38 Wh
• Form factor: Slim internal replacement pack compatible with specific Dell notebook configurations
• Typical use: Provides standard runtime for productivity tasks and light multimedia
• Rechargeable: Yes, designed for multiple charge/discharge cycles
• Operating environment: Intended for normal indoor mobile use; avoid extreme temperatures

How to use

Power down the laptop, disconnect the external power adapter, and follow the device manufacturer's instructions to access the battery compartment or internal bay. Remove the depleted battery carefully and install the replacement pack, ensuring the connector and mounting points align correctly. Reassemble the laptop, connect the external power adapter, and perform an initial full charge before normal use. After installation, monitor battery status through the operating system's battery indicator to confirm correct recognition and charging behavior.

Recommendations

Store and use the battery within the temperature ranges specified by your laptop manufacturer. For longevity, avoid leaving the battery at full charge or fully depleted for extended periods; if storing long-term, leave the battery at about 40–60% charge and check periodically. Do not expose the battery to water, impact, or high heat. Dispose of the battery according to local regulations for lithium‑ion batteries.