Replacement Dell laptop battery WY9MP 4-cell 52Wh (6500 mAh, 7.6V) Black

Replacement Dell laptop battery WY9MP is a 4‑cell Lithium‑Ion pack with a rated energy of 52 Wh and a nominal voltage of 7.6 V. Supplied in black, this battery restores portable run‑time for compatible Dell notebooks and is intended as a direct spare for everyday office use, travel and mobile work.

Advantages

The battery offers a 52 Wh (6500 mAh) Li‑Ion design that balances capacity and weight for typical productivity tasks. Its form factor and connector are made to match compatible Dell notebook models so it can be fitted as a direct replacement. As a single‑unit spare, it provides a straightforward way to recover usable battery life without replacing the entire device.

Suitable for

• Everyday office tasks such as email, web browsing and document editing
• Travel and mobile work where moderate battery life is required
• Replacing an aging or failing original battery in compatible Dell laptops

When it may not be suitable

This 4‑cell 52 Wh battery is designed for standard portable use and moderate runtime. It may not meet the needs of users who require extended all‑day operation under heavy load, gaming, or high‑performance computing, where higher‑capacity or multi‑cell batteries are preferable. Ensure compatibility with your laptop model before purchase.

Key specifications

• Battery technology: Lithium‑Ion (Li‑Ion)
• Capacity: 6500 mAh (52 Wh)
• Nominal voltage: 7.6 V
• Cell count: 4 cells
• Colour: Black

How to use

Turn off the laptop and disconnect any power adapter before replacing the battery. Remove the existing battery according to the laptop manufacturer’s instructions and install the replacement WY9MP pack until it clicks or locks into place. After installation, connect the adapter and charge the battery fully before first use to allow the battery management system to calibrate. Use the laptop’s power management settings to monitor battery health and cycle count over time.

What to consider before purchase

• Confirm physical and connector compatibility with your Dell laptop model
• Check the laptop’s service manual or parts list to verify the correct battery form factor
• Consider required runtime versus weight and size when selecting battery capacity

Recommendations

Store and operate the battery within the manufacturer’s recommended temperature range, avoid deep discharges where possible, and follow safe charging practices. Replace if you notice significant capacity loss, swelling, or charging issues.