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Rectangular black laptop battery with label showing 6-cell 5200mAh 11.1V

FOCUSTEC

FOCUSTEC T54FJ laptop battery 6-cell 5200mAh 60WH 11.1V

SKU CH-CHQ8-50WY2

New lithium-ion replacement battery with 5200 mAh capacity and built-in protection circuits fits compatible Dell Latitude, Inspiron and Vostro laptops

  • Battery TypeLithium-Ion
  • 6-cell 5200 mAh design delivers up to 60 Wh of runtime
  • 1 V lithium-ion chemistry matches original Dell specifications
  • Built-in overcharge, overdischarge, over-temperature and short-circuit protection
  • Compatible with Latitude E5420, E5430, E5520, E5530, E6420, E6430, E6440, E6520, E6530, E6540
  • Fits Inspiron 14R, 15R, 17R and Vostro 3460, 3560 models

FOCUSTEC T54FJ 6-cell laptop battery

The FOCUSTEC T54FJ is a new lithium-ion replacement battery built for Dell Latitude, Inspiron and Vostro notebooks. It targets owners of compatible models who need a fresh 11.1 V power source after the original pack has aged.

Built-in protection circuits

The pack integrates overcharge, overdischarge, over-temperature and short-circuit safeguards that operate automatically during every charge and discharge cycle. These circuits protect both the battery cells and the host notebook without any extra software or user intervention.

5200 mAh capacity and cycle life

Rated at 5200 mAh and 60 Wh across six cells, the battery delivers a full day of typical office use on a single charge. It is rated for up to 500 recharge cycles, after which runtime will gradually decline and a further replacement will be needed.

Highlights

  • 6-cell 5200 mAh design delivers up to 60 Wh of runtime
  • 1 V lithium-ion chemistry matches original Dell specifications
  • Built-in overcharge, overdischarge, over-temperature and short-circuit protection
  • Compatible with Latitude E5420, E5430, E5520, E5530, E6420, E6430, E6440, E6520, E6530, E6540
  • Fits Inspiron 14R, 15R, 17R and Vostro 3460, 3560 models

Specifications

Battery TypeLithium-Ion

Questions about this item

How many recharge cycles can the 5200mAh 6-cell Li-ion battery deliver before it needs replacing?

The battery is rated for up to 500 recharge cycles over its service life, after which capacity will drop enough to warrant a replacement.

What protection limits kick in first when the 11.1V pack runs under sustained load?

Built-in over-temperature and short-circuit protection will activate before the cells exceed safe thermal or current thresholds during continuous use.

How much heat and fan noise does the 60WH battery add when the laptop runs all day?

The battery itself generates minimal extra heat and no noise; any warmth or fan activity comes from the notebook's own cooling system under load.

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