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Rectangular black Dell laptop battery with label showing 78FWY 41 Wh 3467 mAh 11.5 V 3-cell

DELL

DELL 78FWY 41 Wh 3467 mAh 11.5 V 3-cell laptop battery

SKU CH-0561-X1FS7

A new 3-cell lithium-ion laptop battery delivering 41 Wh at 11.5 V with 3467 mAh capacity

  • Battery TypeLithium-Ion
  • 41 Wh capacity powers extended sessions away from a wall outlet
  • 3467 mAh rating delivers reliable charge for compatible Dell laptops
  • 5 V output matches original specification for stable operation
  • Three-cell lithium-ion design balances weight and runtime efficiently
  • Part number 078FWY ensures correct fit for supported models

Direct replacement for Dell 78FWY

This 11.5 V lithium-ion pack restores original runtime for laptops that shipped with the 78FWY battery. It delivers 41 Wh from three cells and matches the factory form factor so installation requires no modification.

Capacity ceiling set by 41 Wh rating

The 3467 mAh figure defines the total energy available per charge; intensive workloads will drain it faster than light use. No circuitry in the pack can increase that limit, so users should plan sessions around the rated capacity.

Three-cell layout keeps profile slim

The 3-cell construction fits the standard Dell bay without adding bulk or weight beyond the original design. Connectors align with the motherboard header exactly, so the battery seats firmly and the latch engages on the first try.

Highlights

  • 41 Wh capacity powers extended sessions away from a wall outlet
  • 3467 mAh rating delivers reliable charge for compatible Dell laptops
  • 5 V output matches original specification for stable operation
  • Three-cell lithium-ion design balances weight and runtime efficiently
  • Part number 078FWY ensures correct fit for supported models

Specifications

Battery TypeLithium-Ion

Questions about this item

Is the 78FWY the right part number for my Dell?

This battery carries part number 78FWY and the compatible part reference 078FWY, so match those codes against your laptop's service tag or original battery label to confirm fit.

What does the 41 Wh rating mean for daily use?

The 41 Wh capacity combined with 3467 mAh at 11.5 V determines how long the pack can power your specific model; actual runtime varies with screen brightness, workload and system power management.

Does the 11.5 V voltage limit which Dell models can use this pack?

Yes, the 11.5 V output and 3-cell lithium-ion design must match your laptop's original voltage specification; only systems designed for an 11.5 V 3-cell pack will operate correctly with this battery.

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