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Rectangular black lithium-ion laptop battery with label showing 11.4V 42Wh

Beisite

Beisite 9JM71 laptop battery 11.4V 42Wh for Latitude 5320 7320 7420 7520

SKU CH-D9DW-HVVZ2

Replacement lithium-ion battery delivering 11.4V and 42Wh for Dell Latitude 5320, 7320, 7420 and 7520 models

  • Battery typeLithium-Ion
  • Battery voltage rating11.4 V
  • Battery capacity42 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor Latitude 5320 7320 7420 7520 Series
  • Compatible with Latitude 5320 7320 7420 7520 series
  • 4V 42Wh lithium-ion cell delivers reliable runtime
  • Replaces original part numbers including 9JM71 7FMXV 31CP5/57/78
  • Brand-new black battery supplied as single unit
  • 12-month coverage included with purchase

Replacement battery for Latitude 5320 7320 7420 7520

This 11.4 V 42 Wh lithium-ion pack is built to fit the Latitude 13 5320 and Latitude 14 7320 7420 7520 series. It arrives new in black and carries a 12-month warranty. The cell chemistry matches the original specification for direct swap-in.

Replaces part numbers 9JM71 7FMXV 0TN2GY 4M1JN

The unit covers HDGJ8 MHR4G TN2GY 4M1JN 1PP63 and the 31CP5/57/78 codes listed by the supplier. Upgrade is worthwhile when the original pack no longer holds a full day of charge or shows swelling. A fresh cell restores runtime to factory levels.

Verify your original part number before ordering

Cross-reference the sticker on your old battery against the supported codes above. The compatibility list is non-exhaustive so contact the seller if your model or part number is absent. Confirm voltage reads 11.4 V and capacity reads 42 Wh on the original label.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $41.99
Pricier than about 73% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand name9JM71
Model name9JM71
Part number31CP5/57/78
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.4 V
Battery capacity42 Wh
Compatibility
Compatible withFor Latitude 5320 7320 7420 7520 Series

Questions about this item

Will this 11.4V 42Wh pack fit inside my Latitude 7420 without modification?

Yes, the 9JM71 is built to the same form factor as the original 7FMXV and 31CP5/57/78 modules used in the Latitude 7420, so it slides into the existing battery bay with no chassis changes.

What is the correct installation sequence for the 9JM71 and which step do people skip?

Power off the laptop, disconnect the AC adapter, remove the base cover screws, detach the old battery connector before lifting the pack, then connect the new 9JM71 connector first and re-secure the cover; the step most often missed is unplugging the old battery cable before removing the pack.

When should I plan to replace the 9JM71 and what indicates it is time?

Plan on a replacement after the 12-month warranty period when run-time noticeably shortens or the system reports a significant capacity loss; the lithium-ion cells will gradually hold less charge with each cycle.

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