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Rectangular black laptop battery with three cells visible

DELL

DELL C5KG6 JK6Y6 Laptop Battery 3-Cell 40Wh 11.25V Black

SKU CH-T1GW-WKD1B

A 3-cell lithium-ion replacement battery delivering 40Wh at 11.25V for compatible Dell laptops

  • Battery typeLithium-Ion
  • 40 Wh capacity supports longer unplugged sessions
  • 25 V output matches original Dell power requirements
  • 3-cell lithium-ion design keeps weight low for portable use
  • Replaces nine Dell part numbers including JK6Y6 and C5KG6
  • New condition ensures full rated capacity from first charge

Direct Replacement for Select Dell Laptops

This lithium-ion battery replaces part numbers including 0C5KG6, 5NDNH, CF5RH, J60J5, JK6Y6, K3N6W and W7KC0. It is built for owners of compatible Dell notebooks who need a genuine-capacity power source. The black 3-cell pack delivers 40Wh at 11.25 volts.

Verify the Part Number Before Ordering

Check the label on your current battery or the laptop service manual to confirm that one of the listed part numbers matches exactly. Voltage and capacity must align with the original specification; a mismatch can prevent charging or cause the system to reject the pack. Ensure the connector orientation matches the bay.

Steady Output Through a Full Workday

The 40Wh rating represents the energy available under normal discharge, not a peak burst figure. Internal cell balancing maintains consistent voltage as the pack depletes, so the laptop sees stable power until the low-battery threshold. Lithium-ion chemistry avoids memory effect, allowing partial recharges without capacity loss.

How it compares

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

Price $48.99
Pricier than about 81% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium-Ion

Questions about this item

What comes in the box and is any tooling or cable needed for installation?

The package contains the 3-cell 40Wh 11.25V lithium-ion battery only; no tools, cables or adapters are included and none are required for the standard internal swap.

There are several compatible part numbers listed — how do I pick the right one for my laptop?

Match any of the listed part numbers — 0C5KG6, 5NDNH, CF5RH, J60J5, JK6Y6, K3N6W or W7KC0 — against the sticker on your original battery or the Dell service manual for your model.

What does the 40Wh rating actually deliver in daily use on a typical Dell laptop?

A 40Wh pack at 11.25V typically provides several hours of light productivity — web browsing, document editing and video playback — before needing a recharge.

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