FOCUSTEC
FOCUSTEC GJKNX 68Wh 7.6V laptop battery for Dell Latitude 5480 5580 5490 5590 Precision 3520 3530
68Wh lithium-ion battery fits Dell Latitude and Precision 15 models with built-in circuit protection and includes two screwdrivers for installation
- Battery TypeLithium-Ion
- 68Wh capacity powers Dell Latitude and Precision models through long work sessions
- 6V lithium-ion chemistry matches original specifications for stable performance
- Four-cell design fits 9.37 x 4.05 x .27 in chassis without modification
- Built-in protection guards against short circuit, over-voltage, over-current and deep discharge
- Includes two screwdrivers and manual for straightforward self-installation
What this battery replaces
The FOCUSTEC GJKNX is a new 68Wh lithium-ion pack rated at 7.6V with four cells. It matches Dell part numbers GD1JP, DY9NT, 5YHR4 and 451-BBZG for Latitude 5480, 5580, 5490, 5590, 5280, 5288, 5488, 5491, 5591, 5495 and Precision 3520, 3530 series laptops. The pack measures 9.37 x 4.05 x 0.27 in and ships with a user manual plus two screwdrivers. Buyers whose Dell model is not in the list above cannot use this battery.
Practical limits of the 7.6V lithium-ion design
Capacity is fixed at 8500mAh / 68Wh, so runtime will not exceed what the original 68Wh pack delivered. The cell chemistry supports up to 500 recharge cycles before noticeable degradation. Built-in protection covers short circuit, over-voltage, over-current and deep discharge, but the battery cannot supply higher voltage or capacity than specified. Systems requiring a different voltage or form factor will not operate with this unit.
Installation and common pitfalls
The package includes two screwdrivers for the bottom-case screws found on most listed Latitude and Precision models. Typical steps: power off, disconnect AC, remove the base cover, unplug the old battery connector, swap packs, reconnect and reassemble. Common issues include forgetting to disconnect the old battery cable before removal, stripping the small case screws, or seating the connector incompletely, which causes a no-power condition. The manual illustrates the cable orientation for each chassis.
Highlights
- 68Wh capacity powers Dell Latitude and Precision models through long work sessions
- 6V lithium-ion chemistry matches original specifications for stable performance
- Four-cell design fits 9.37 x 4.05 x .27 in chassis without modification
- Built-in protection guards against short circuit, over-voltage, over-current and deep discharge
- Includes two screwdrivers and manual for straightforward self-installation
Specifications
| Battery Type | Lithium-Ion |
|---|
Questions about this item
How do I choose the right version of this 68Wh battery for my laptop?
Match your original part number to the list — GJKNX, GD1JP, DY9NT, 5YHR4, 451-BBZG, FPT1C, KCM82 or MT31P — and confirm your model is in the compatible Latitude 5480, 5580, 5490, 5590, 5280, 5288, 5488, 5495, 5491, 5591 or Precision 3520, 3530 series.
What does the 68Wh rating mean for daily runtime on a Latitude 5480?
The 8500 mAh, 7.6 V pack stores 68 Wh of energy; actual runtime depends on screen brightness, workload and power settings, but the capacity matches the original factory specification for these models.
What interface does the battery use and does it limit charging speed?
It connects through the standard Dell proprietary battery connector used by the listed Latitude and Precision models; the built-in protection circuit manages charge current within the laptop's own charging logic.
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