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Rectangular black laptop battery with label and connector

Adafruit

Adafruit Laptop Battery Replacement 7.4V 54Wh for Dell Latitude E7440 E7420 E7450

SKU CH-SA22-KP9VW

7.4 V 54 Wh Li-ion replacement battery for Dell Latitude E7440, E7420 and E7450 ultrabooks

  • Li-ion chemistry gives reliable power for daily use
  • 54 Wh capacity extends runtime between charges
  • 4 V output matches original Dell specifications
  • Fits Latitude E7420 12.5" and E7440 E7450 14" ultrabooks
  • CE FCC RoHS certified for safe operation

Replacement battery for Dell Latitude E7440 E7420

This 7.4V 54Wh lithium-ion pack replaces the original battery in Dell Latitude E7440 E7420 E7450 ultrabooks. It matches the listed part numbers including 34GKR 3RNFD 03RNFD and 451-BBFY 451-BBFV 451-BBFT. The unit is new and carries CE FCC RoHS safety certifications.

Voltage and capacity define the practical limits

The pack delivers 7.4 volts and 54 watt-hours, which sets the energy ceiling for the laptop between charges. Runtime will vary with screen brightness workload and power-management settings. The physical form factor is fixed for the 12.5 inch and 14 inch chassis so no larger capacity can fit.

Check the exact model

Confirm the laptop is a Latitude E7420 E7440 or E7450 and verify the original battery part number against the compatibility list. The connector and mounting points differ between series so a mismatch will prevent installation. This pack does not suit other Dell families or non-Latitude models.

Highlights

  • Li-ion chemistry gives reliable power for daily use
  • 54 Wh capacity extends runtime between charges
  • 4 V output matches original Dell specifications
  • Fits Latitude E7420 12.5" and E7440 E7450 14" ultrabooks
  • CE FCC RoHS certified for safe operation

Specifications

No published specifications for this item yet.

Questions about this item

Which part number matches my Latitude E7440, E7420 or E7450?

This battery replaces Dell part numbers 34GKR, 3RNFD, 03RNFD, V8XN3, G95J5, 0909H5, 5K1GW, K8J43, CJW7D, PFXCR, G0G2M, T19VW, F38HT, 451-BBFY, 451-BBFV, 451-BBFT and 451-BBFS across the E7440, E7420 and E7450 series.

What runtime does the 54 Wh rating give in a real laptop?

The 54 Wh capacity at 7.4 V restores the original factory runtime for the 12.5" and 14" Latitude Ultrabooks, matching the OEM battery's watt-hour specification.

What connector and voltage does this pack use?

It uses the Dell Latitude 7.4 V proprietary connector, so the pack fits directly into the E7440, E7420 and E7450 without adapters.

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