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Rectangular black laptop battery pack with label showing 55Wh 7.6V 4-cell

DELL

DELL 55Wh 7.6V 4-Cell Lithium-Ion Battery J60J5 7CJRC MC34Y OMC34Y 242WD P26S

SKU CH-4D77-J4BF1

A 55Wh 7.6V 4-cell lithium-ion replacement battery compatible with Dell J60J5 7CJRC MC34Y OMC34Y 242WD P26S part numbers

  • CompatibilityCompatible with Dell J60J5 7CJRC MC34Y OMC34Y 242WD P26S
  • Battery TypeLithium-Ion
  • 55Wh capacity extends laptop runtime
  • 6V lithium-ion chemistry matches original specification
  • Four premium-grade cells deliver consistent power output
  • CE and RoHS certified for safety and environmental compliance
  • One-year replacement warranty covers material and workmanship defects

Replacement Battery for Dell Laptops

This 55Wh lithium-ion battery replaces the original Dell J60J5 7CJRC MC34Y OMC34Y 242WD P26S pack. It delivers 7.6V output across four premium cells and is built to CE and RoHS safety standards. The unit is supplied new and carries a one-year replacement warranty.

Upgrading from a Depleted Original Pack

The jump is worth it when your current battery no longer holds a useful charge or shuts down under load. This replacement restores the factory 55Wh capacity and 7.6V voltage, matching the original runtime specifications. Buyers who need a higher-watt-hour pack or a different voltage should look elsewhere.

Straightforward Swap with a Critical Fit Check

Installation is a simple case swap on most Dell notebooks, but the supplier notes two different batteries exist for the same laptop model and they are not interchangeable. Compare the physical layout and connector of your old battery against the product photos before fitting. Skipping that verification is the most common reason for a return.

Highlights

  • 55Wh capacity extends laptop runtime
  • 6V lithium-ion chemistry matches original specification
  • Four premium-grade cells deliver consistent power output
  • CE and RoHS certified for safety and environmental compliance
  • One-year replacement warranty covers material and workmanship defects

Specifications

CompatibilityCompatible with Dell J60J5 7CJRC MC34Y OMC34Y 242WD P26S
Battery TypeLithium-Ion

Questions about this item

Does the 55Wh 4-cell lithium-ion battery match the dimensions and connector of the original Dell J60J5 battery?

The battery is built to the Dell J60J5 form factor and connector, so it fits the same bay and plugs directly into the motherboard without adapters.

What is the correct sequence to install the 7.6V 55Wh battery without triggering a BIOS error?

Power off the laptop, disconnect the AC adapter, remove the old pack, insert the new battery until it clicks, reconnect AC power, then boot to let the BIOS recalibrate.

When should the 55Wh 4-cell pack be replaced to maintain reliable runtime?

Replace the pack when a full charge no longer powers the laptop for a typical work session or when the operating system reports a significant capacity loss.

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