We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black laptop battery with label showing 7.6V 5921mAh 45Whr

PowerWarehouse

PowerWarehouse HK6N5 laptop battery for Dell Inspiron 5390 5391 7490 XPS 9370 7.6V 5921mAh

SKU CH-0YJ4-BGW0W

A 4-cell lithium-ion replacement battery delivering 7.6V and 5921mAh for select Dell Inspiron, Latitude, Vostro and XPS models

  • Battery Type4 Cell Lithium-Ion
  • Fits Dell Inspiron 5390 5391 7490 and XPS 9370 9380
  • Matches OEM part numbers HK6N5 and WDK63 for direct replacement
  • 6V 45Whr 4-cell lithium-ion delivers reliable power
  • 5921mAh capacity supports extended mobile work sessions
  • Backed by a 6-month warranty from a USA-based supplier

Compatible Dell models

This replacement battery fits Dell Inspiron 5390 5391 7490, Latitude 3301, Vostro 5390 5391 and XPS 9370 9380 laptops. It matches OEM part numbers HK6N5 and WDK63. Buyers with other Dell series or non-Dell notebooks cannot use this part.

Voltage and capacity

The pack delivers 7.6V and 45Whr from a 4-cell lithium-ion design rated at 5921mAh. These figures decide whether the battery meets the original runtime and power requirements. Systems that need a different voltage or watt-hour rating will not work correctly.

Warranty coverage

A six-month warranty is included with the new battery. This protects against early capacity loss or cell failure during the first half-year of use. Labour, shipping or damage caused by incorrect installation are not covered.

Highlights

  • Fits Dell Inspiron 5390 5391 7490 and XPS 9370 9380
  • Matches OEM part numbers HK6N5 and WDK63 for direct replacement
  • 6V 45Whr 4-cell lithium-ion delivers reliable power
  • 5921mAh capacity supports extended mobile work sessions
  • Backed by a 6-month warranty from a USA-based supplier

Specifications

Battery Type4 Cell Lithium-Ion

Questions about this item

How long will the 5921 mAh capacity last on a single charge in my Dell XPS 9370?

The 45 Wh rating gives a typical office workload several hours of runtime, though actual life depends on screen brightness, CPU load and battery health.

Does the 7.6 V output match the original Dell HK6N5 specification exactly?

Yes, the replacement is rated at 7.6 V and 45 Wh, matching the OEM voltage and energy specification for the listed Dell models.

Will this four-cell pack fit inside my Inspiron 5390 without any case modification?

It is built to the same form factor as the original HK6N5 and WDK63 batteries, so it seats directly in the existing compartment.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.