Notebook battery Dell 266J9 Premium 6-cell 4400mAh, replacement for compatible Dell laptops

Premium notebook battery DELL 266J9 with 4255mAh capacity and 11.4V nominal voltage is a rechargeable Li-ion replacement battery designed for compatible Dell laptops. The pack uses original-type lithium-ion cells with balanced parameters to provide high capacity and long cycle life; cells are designed for up to 600 charge cycles and do not exhibit a memory effect, allowing charging at any time. The battery is sold with a 12-month warranty. Waste batteries must be disposed of in designated collection containers.

Advantages

The battery is manufactured from new lithium-ion cells with balanced performance, giving a stable capacity and extended usable life. It is compatible with multiple Dell G3, G5, G7 and Inspiron models and is designed as a direct replacement for the listed battery model numbers (for example: 266J9, 0M4GWP, PN1VN). The product meets standard safety and quality expectations for replacement notebook batteries.

Suitable for

• Replacing a worn or failing battery in compatible Dell G3, G5, G7 and Inspiron laptops
• Extending runtime for mobile work, study or travel
• Users who need a direct, OEM-compatible battery swap

Key specifications

• Capacity: 4255mAh
• Voltage: 11.4V
• Element type: Li-ion
• Cell count: 6-cell design (standard notebook battery format)
• Warranty: 12 months

How to use

Turn off the laptop and disconnect the power adapter. Remove the existing battery following the laptop manufacturer's instructions, then install the replacement DELL 266J9 battery in the correct orientation and secure it. Reconnect the power adapter and charge the battery fully before first use. Use the laptop normally; the Li-ion cells do not require full discharge cycles and can be charged at any time.

Usage recommendations

For safety and optimal performance, use the battery only in compatible Dell models listed by the manufacturer, avoid exposure to extreme temperatures, and recycle the old battery at an appropriate collection point.