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Black rectangular lithium-ion laptop battery with label showing 65Wh 11.1V

Beisite

Beisite MR90Y 65Wh 11.1V laptop battery

SKU CH-N9XV-X8D9F

65 Wh lithium-ion replacement battery for Dell Inspiron 14, 15 and 17 series and Latitude 3000 models

  • ColorBlack
  • TypeBattery
  • Compatibilityfor Inspiron 14-3421 5421 15-3521 3537 15R 17-3737 Series
  • Battery TypeLithium-Ion
  • Battery Voltage11.1V
  • Battery Capacity65Wh
  • Lithium-ion chemistry delivers stable 11.1V output
  • 65Wh capacity powers extended work sessions
  • Fits Inspiron 14, 15 and 17 series models
  • Compatible with Latitude 3000 and E3000 series
  • Replaces original Dell part 31CR19/66-2

Compatible Dell Inspiron models

This lithium-ion replacement battery fits a wide range of Inspiron 14, 15 and 17 series laptops including the 3421, 3521, 3537 and 3737 models. It also supports several Latitude 3000 series and Vostro 2421 devices. The 65Wh capacity matches the original specification for these systems.

Buyers needing a direct replacement

It suits owners of the listed Dell laptops whose original battery no longer holds a useful charge. Users with different Dell models or other brands should look elsewhere because the connector and form factor are specific to the series shown above.

65Wh capacity and 11.1V output

The 65Wh rating provides a like-for-like energy reserve for daily office work, web browsing and media playback. Runtime will fall short for intensive workloads such as video rendering or gaming that demand sustained high power draw.

Highlights

  • Lithium-ion chemistry delivers stable 11.1V output
  • 65Wh capacity powers extended work sessions
  • Fits Inspiron 14, 15 and 17 series models
  • Compatible with Latitude 3000 and E3000 series
  • Replaces original Dell part 31CR19/66-2

Specifications

BrandMR90Y
ModelMR90Y
Part Number31CR19/66-2
ColorBlack
TypeBattery
Compatibilityfor Inspiron 14-3421 5421 15-3521 3537 15R 17-3737 Series
Battery TypeLithium-Ion
Battery Voltage11.1V
Battery Capacity65Wh

Questions about this item

Which Dell laptop models must I already own for this 65Wh 11.1V battery to fit?

It fits Inspiron 14-3421, 14-3437, 14-5421, 15-3521, 15-3537, 15R-5521, 15R-5537, 17-3721, 17-3737, 17R-5737, Latitude 3440, 3540, E3440, E3540 and Vostro 2421.

Will this 11.1V Li-ion pack charge correctly on the original AC adapter that came with my Inspiron 14-3421?

Yes, the voltage and connector match the factory specification, so the existing charger will charge the pack normally.

How can I confirm the battery is recognised and reporting 65Wh after installation?

Power on the laptop, open the BIOS or Windows battery report and verify the design capacity shows 65Wh and the voltage reads 11.1V.

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