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Black rectangular lithium-ion laptop battery, 74Wh

Beisite

Beisite 357F9 74Wh laptop battery for Inspiron 15 7000 7559 7557 7566 7567 7759 31CP5/57/81-2

SKU CH-XNJ4-EXAJ0

74 Wh lithium-ion replacement battery for Dell Inspiron 15 7000 and 5000 series laptops

  • ColorBlack
  • TypeBattery
  • CompatibilityFor Inspiron 15 7000 7559 7557 7566 7567 7759 Series
  • Battery TypeLithium-Ion
  • Battery Voltage11.1V or 11.4V (Ship it as available)
  • Battery Capacity74Wh
  • 74Wh capacity powers longer sessions between charges
  • 1V or 11.4V voltage matches original specifications
  • Lithium-ion chemistry delivers reliable recharge cycles
  • Replaces part numbers 357F9 0GFJ6 71JF4 071JF4 0357F9 and 31CP5/57/81-2
  • Fits Inspiron 15 7000 models 7559 7557 7566 7567 7759

Replacement battery for Inspiron 15 7000 series

This 74Wh lithium-ion pack replaces part numbers 357F9 0GFJ6 71JF4 071JF4 0357F9 and 31CP5/57/81-2 in compatible Dell Inspiron 15 5000 and 7000 models including 5576 5577 7557 7559 7566 7567 and 7759. It is a direct swap for the original 11.1V or 11.4V unit supplied new with a 12-month warranty. The black finish matches the chassis and the pack is not compatible with the 42Wh WDX0R variant.

Check your original part number before ordering

Verify that the label on your existing battery reads 357F9 0GFJ6 71JF4 071JF4 0357F9 or 31CP5/57/81-2 and confirm your laptop model appears in the supported list. The supplier notes the compatibility list is non-exhaustive so contact them if your part number or model is not shown. Do not order if your current battery is the 42Wh WDX0R version as this pack will not fit.

Thermal and power behaviour in daily use

The lithium-ion chemistry delivers the rated 74Wh at either 11.1V or 11.4V depending on stock supplied. Normal operation produces heat comparable to the original Dell pack and the battery management system regulates charge current to stay within safe limits. No active cooling is required and acoustic noise is absent because the unit has no moving parts. Power draw follows the laptop's own power-profile settings.

Highlights

  • 74Wh capacity powers longer sessions between charges
  • 1V or 11.4V voltage matches original specifications
  • Lithium-ion chemistry delivers reliable recharge cycles
  • Replaces part numbers 357F9 0GFJ6 71JF4 071JF4 0357F9 and 31CP5/57/81-2
  • Fits Inspiron 15 7000 models 7559 7557 7566 7567 7759

Specifications

Brand357F9
Model357F9
Part Number31CP5/57/81-2
ColorBlack
TypeBattery
CompatibilityFor Inspiron 15 7000 7559 7557 7566 7567 7759 Series
Battery TypeLithium-Ion
Battery Voltage11.1V or 11.4V (Ship it as available)
Battery Capacity74Wh

Questions about this item

Does the package include any tools or cables, or is it only the battery?

The package contains one 74Wh lithium-ion battery in black. No tools, cables or adapters are included.

My original battery is labelled 11.1V and this one ships as 11.1V or 11.4V — which voltage should I choose?

Both voltages are compatible with the listed Inspiron 15 5000 and 7000 models. The supplier ships whichever voltage is available, and either will work.

Will the 74Wh capacity give me noticeably longer runtime than the 42Wh WDX0R battery I have now?

Yes. The 74Wh rating is nearly double the 42Wh capacity, so you can expect roughly twice the run time per charge under the same workload.

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