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Rectangular Ni-MH battery pack, 100.41 x 37.79 x 37.79mm, 2.4V 3000mAh

Estry

Estry 6539-6 2.4V 3000mAh standard battery

SKU CH-9TSH-W1XCB MPN 6539-6

A 2.4 V, 3000 mAh Ni-MH replacement pack compatible with numerous National tool models including 6539-6 and EY903

  • Specifications2.4
  • Battery Pack1 Year
  • Built to match original specifications for reliable performance
  • 4V 3000mAh Ni-MH chemistry delivers 7.2Wh capacity
  • Certified to ISO9001 RoHS CE UN38.3 and MSDS standards
  • Overcharge over-discharge over-voltage and short-circuit protection included
  • Compatible with a wide range of National and Panasonic model numbers

Direct replacement for National cordless tools

The Estry 6539-6 is a 2.4V Ni-MH battery pack rated at 3000mAh and 7.2Wh. It matches the original specifications for a wide range of National models including the 6539-6, EY903, 6538-1 and EY9021B. The pack measures 100.41 x 37.79 x 37.79mm and weighs 208.4g.

Upgrade from lower-capacity Ni-Cd packs

Users replacing older nickel-cadmium cells gain longer run time per charge without changing voltage or form factor. The jump is worth it when the original pack no longer holds a full day of intermittent use. Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards for safe operation.

Steady output during extended jobs

The 3000mAh capacity supports sustained current draw over long cutting or drilling sessions rather than short bursts. Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits to maintain consistent voltage under load.

Highlights

  • Built to match original specifications for reliable performance
  • 4V 3000mAh Ni-MH chemistry delivers 7.2Wh capacity
  • Certified to ISO9001 RoHS CE UN38.3 and MSDS standards
  • Overcharge over-discharge over-voltage and short-circuit protection included
  • Compatible with a wide range of National and Panasonic model numbers

Specifications

BrandNi-MH
Model3000mAh
Specifications2.4
Battery Pack1 Year

Questions about this item

What are the dimensions of the Estry 6539-6 battery pack?

The battery pack measures 100.41 x 37.79 x 37.79 mm and weighs 208.4 g.

How is the Estry 6539-6 battery installed, and what step is often missed?

Slide the pack into the tool’s battery bay until the latch clicks; the step often missed is confirming the model number matches your device from the compatible list.

When will the Estry 6539-6 battery need replacement?

The manufacturer rates the pack for a 1-year service life; replace it when run-time drops noticeably or it no longer holds a full 3000 mAh charge.

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