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Black rectangular lithium-ion laptop battery pack with connector端子 visible

PISKEKAT

PISKEKAT 266J9 51Wh 11.4V 3-cell laptop battery

SKU CH-RV3A-JKDM6 MPN 266J9

A 51Wh 11.4V 3-cell Li-ion replacement battery compatible with Dell G3 3500, 3590, 3790, G5 5500, 5505 and Inspiron 5490 series laptops

  • Battery TypeLaptop Batteries
  • 51Wh capacity powers Dell G3 3500 3590 and G5 5500 series
  • 4V Li-ion chemistry with smart chip protects against overcharge
  • Replaces part numbers 266J9 0415CG C9VNH 0PN1VN 0M4GWP
  • Fits Inspiron 5490 and 15 17 inch models listed
  • 3-cell 4255mAh design installs directly in supported laptops

Replacement battery for Dell G3 and G5

The PISKEKAT 266J9 is a new lithium-ion laptop battery rated at 11.4V with a capacity of 51Wh and 4255mAh across three cells. It is built for Dell G3 15 3500 3590 3790 series and G5 15 5500 series machines including the SE 5500 variant. The pack also fits Inspiron 5490 and several 15PR 1545W 1548BR 1645W 1648BR 1742BR 1742W 1748BR models. A smart chip and top-grade circuit boards manage power delivery.

Match the original part number before ordering

Dell uses two different packs in these chassis: the MV07R rated at 68Wh with four cells and this 266J9 rated at 51Wh with three cells. The only reliable way to confirm fit is to check the label on the battery currently installed and verify it lists 266J9 or one of the cross-referenced codes 0415CG C9VNH 0PN1VN 0M4GWP. Installing the wrong cell count will prevent the laptop from recognising the pack.

Steady discharge under everyday workloads

The three-cell lithium-ion design delivers a stable 11.4V output throughout typical office and media tasks without the voltage sag seen in aged packs. The integrated smart chip balances each cell during charge and discharge cycles to maintain consistent runtime over the battery's service life. If the pack is not recognised on first fit, reseat the connector then run three to four full charge cycles down to ten percent to calibrate the fuel gauge.

Highlights

  • 51Wh capacity powers Dell G3 3500 3590 and G5 5500 series
  • 4V Li-ion chemistry with smart chip protects against overcharge
  • Replaces part numbers 266J9 0415CG C9VNH 0PN1VN 0M4GWP
  • Fits Inspiron 5490 and 15 17 inch models listed
  • 3-cell 4255mAh design installs directly in supported laptops

Specifications

Battery TypeLaptop Batteries

Questions about this item

What does the 51Wh rating mean for daily use in a Dell G3 3590?

The 51Wh capacity stores enough energy for typical office tasks and web browsing on compatible Dell G3 15 3590 models, with actual runtime depending on screen brightness, workload and power settings.

How does the 11.4V output affect compatibility with the original Dell part?

The 11.4V nominal voltage matches the factory specification for the 266J9, 0415CG, C9VNH, 0PN1VN and 0M4GWP part numbers, so the battery communicates correctly with the laptop's charging controller.

Will this 3-cell pack fit the same bay as the 4-cell 68Wh version in a Dell G5 5500?

No. The 266J9 is a 3-cell design while the MV07R is a 4-cell 68Wh pack; they have different physical dimensions and are not interchangeable in the G5 5500 chassis.

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