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Rectangular black lithium-ion laptop battery, 11.4V 51Wh

Beisite

Beisite R8D7N laptop battery 11.4V 51Wh 31CP6/56/77

SKU CH-VMAJ-19FCM

New 11.4 V 51 Wh lithium-ion battery replaces part 31CP6/56/77 for Latitude 5400, 5410, 5500, 5510, Precision 3540, 3550 and Inspiron 2-in-1 series

  • Battery typeLithium-Ion
  • Battery voltage rating11.4 V
  • Battery capacity51 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor Latitude 5400 5410 5500 5510 Precision 3540 3550 Series
  • 51Wh capacity powers Latitude 5400 and 5410 models
  • 4V lithium-ion cell fits Latitude 5500 and 5510 series
  • Replaces Dell part numbers 1V1XF 4GVMP and 31CP6/56/77
  • Compatible with Precision 3540 and 3550 workstations
  • 12-month warranty covers the new black battery

Beisite R8D7N 11.4V 51Wh Battery

This Beisite R8D7N lithium-ion battery delivers 11.4 volts and 51 watt-hours of capacity. It replaces Dell part numbers R8D7N, 4GVMP, 1V1XF, C5GV2 and 31CP6/56/77. The pack is finished in black and ships new with a 12-month warranty.

For Latitude 5400 5500 Precision 3540 Owners

This unit fits Latitude 5400, 5410, 5500 and 5510 models plus Precision 3540 and 3550 systems. It also suits Inspiron 7590 2-in-1, 7591 2-in-1 and 7791 2-in-1 variants. Buyers with standard Inspiron 7590, 7591 or 7791 non-2-in-1 chassis should look elsewhere.

51Wh Capacity Decides Fit

The single specification that determines suitability is the 51Wh energy rating at 11.4V. If your original battery shows the same voltage and watt-hour value and your laptop model appears in the supported list, this replacement will match the electrical and physical requirements.

How it compares

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

Price $44.99
Pricier than about 77% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameR8D7N
Model nameR8D7N
Part number31CP6/56/77
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.4 V
Battery capacity51 Wh
Compatibility
Compatible withFor Latitude 5400 5410 5500 5510 Precision 3540 3550 Series

Questions about this item

Does the 31CP6/56/77 pack fit inside a Latitude 5400 chassis without modification?

The battery is built to the original form factor for Latitude 5400, 5410, 5500, 5510, Precision 3540 and 3550 models, so it seats in the standard bay with no cutting or shimming required.

Which screws or latches must be released before sliding the 11.4 V unit into a Precision 3550?

Remove the bottom cover screws, disconnect the old pack’s cable, then press the new battery into the connector until it clicks; the most common mistake is forgetting to reconnect the data ribbon before refitting the cover.

When will the 51 Wh lithium-ion cell need replacement under normal use?

The supplier provides a 12-month warranty; typical lithium-ion chemistry delivers several hundred charge cycles before runtime drops noticeably, so plan on a swap once daily run time falls well below your needs.

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