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Rectangular black laptop battery with label and connector

PISKEKAT

PISKEKAT D820 87 WH laptop battery 7800 mAh

SKU CH-K95Y-30T1E

A 7800 mAh, 87 WH replacement battery compatible with Dell Latitude D531, D820, D830 and Precision M4300, M65 models

  • Battery TypeLaptop Batteries
  • 87 Wh capacity powers Dell Latitude and Precision laptops longer
  • 7800 mAh high-efficiency cells deliver extended runtime for daily workloads
  • Replaces CF623, DF192, MM165 and 30+ OEM part numbers directly
  • Fits Latitude D531, D820, D830 and Precision M4300, M65 models
  • New condition ensures reliable power from first charge

Replacement battery for Dell Latitude and Precision

This 87 WH replacement battery is built for Dell Latitude D531, D531N, D820 and D830 models as well as Precision M4300, M65 and M65 Mobile units. It delivers 7800 mAh capacity using high-efficiency cells for long-lasting runtime. The pack is a direct substitute for original Dell part numbers including CF623, DF192 and MM165.

87 WH capacity decides fit and runtime

The single specification that determines whether this is the correct part is the 87 watt-hour energy rating paired with 7800 mAh charge capacity. Only laptops designed for this exact energy level will charge and report capacity correctly. Verify the original battery label shows the same watt-hour value before ordering.

Simple swap but watch for connector alignment

Installation requires removing the old pack and sliding this unit into the same bay until the latch clicks. The most common issue is a loose fit caused by worn latch hooks on older chassis, which can interrupt charging. If the battery does not seat firmly, inspect the laptop's retention clips rather than forcing the pack.

Highlights

  • 87 Wh capacity powers Dell Latitude and Precision laptops longer
  • 7800 mAh high-efficiency cells deliver extended runtime for daily workloads
  • Replaces CF623, DF192, MM165 and 30+ OEM part numbers directly
  • Fits Latitude D531, D820, D830 and Precision M4300, M65 models
  • New condition ensures reliable power from first charge

Specifications

Battery TypeLaptop Batteries

Questions about this item

How long will the 87 WH rating actually run a Latitude D820?

The 87 watt-hour capacity typically delivers several hours of mixed office work on a Latitude D820, though exact runtime depends on screen brightness, CPU load and battery age.

Does this battery use the same connector as the original CF623 pack?

Yes, it is built to the Dell CF623/DF192 form factor and plugs directly into the Latitude D531, D820, D830 and Precision M4300, M65 battery bay.

Will the pack fit the D820 without a spacer or adapter?

It matches the OEM dimensions for the D820 and listed Precision models, so it seats in the standard bay with no extra hardware.

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