Replacement WW8N8 66DWX 57Wh Battery for Dell Latitude 7640

Replacement battery for dell Latitude 7640 WW8N8 66DWX 57Wh Laptop Battery compatible with DELL Latitude 7340 7350 7440 7450 7640 7650 Series Notebook

【Specifications】

Item Model: 66DWX ;

Battery Type: Li-ion;

Voltage: 11.4V;

Capacity: 57Wh 4878mAh;

Battery Condition: New.

Replacement for Part Number:

WW8N8  66DWX  FH97R  0CTJJ6  0HYH8 

Compatible Models

for Dell Latitude 7350 Series;

for Dell Latitude 7340 Series;

for Dell Latitude 7450 Series;

for Dell Latitude 7440 Series;

for Dell Latitude 7650 Series;

for Dell Latitude 7640 Series;.

If you are unsure whether this battery is compatible with your Dell laptop, please contact us ：order@battery4pc.com or live chat before placing your order.

Frequently Asked Questions

How to Find Your Dell Latitude 7640 Computer Model Number?

Check the sticker on the bottom of your laptop or back of your desktop. Look for "Model" or "Service Tag".

Or Check on Your Screen (Windows)

Start → Settings → System → About     Find Device Name or Model.

How do I find my dell Latitude 7640 laptop battery part number?

1>Power off your laptop and remove the battery. Check the battery label — look for DP/N, Dell P/N, or Part Number.

The part number is printed on the sticker/label on your original battery. Laptop model alone is not enough to confirm compatibility.

2>BIOS — press F2 → Battery Information.

3>Dell Support — enter the laptop’s Service Tag and check the battery parts.

Is this an original Dell battery?

No!This is a high-quality replacement battery designed to meet OEM specifications and provide reliable performance comparable to the original battery.

This product is a replacement  battery and is not an original Dell-branded battery. This replacement battery is designed for compatibility with the listed Dell laptop models.

Is this battery compatible with Dell Latitude 7640?

Yes, it is fully compatible with Dell Latitude 7340 and related models listed above.

How do I check compatibility?

Please compare your original battery part number with WW8N8  66DWX or confirm your laptop model name Dell Latitude 7640.

Which laptop models is this WW8N8 battery compatible with?

This 11.4V 57Wh 4‑cell replacement battery fits Dell Latitude 7340 7350 7440 7450 7640 7650 Series

What are the technical specs of this replacement battery?

Voltage: 11.4V；Capacity:57Wh, 4‑cell lithium‑ion pack. It is brand‑new replacement unit, not original Dell OEM battery, designed to match original power requirements of your notebook.

When Should You Replace Your Dell Latitude 7640 Battery?

Your Dell Latitude 7640 battery may need replacement if you experience:

• Short battery life
• Fast battery drain
• Unexpected shutdown
• Battery not charging
• Reduced battery health

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