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Rectangular Ni-MH battery pack, matte finish, labelled EZ502 2.4V 3000mAh

Estry

Estry EZ502 2.4V 3000mAh Ni-MH standard battery

SKU CH-E8YG-4NTDV MPN EZ502

A 2.4V 3000mAh Ni-MH replacement pack compatible with EZ502, EY503B, EY6220B and related models, certified to ISO9001, RoHS, CE and UN38.3

  • Battery pack size1 Year
  • Details2.4
  • Exact-fit replacement for National EZ502 and EY503B tools
  • 4 V 3000 mAh Ni-MH chemistry delivers 7.2 Wh runtime
  • Built-in overcharge, over-discharge and short-circuit protection
  • Certified to ISO 9001, RoHS, CE and UN 38.3 standards
  • Compact 100.41 × 37.79 × 37.79 mm pack weighs 208.4 g

Replacement battery for National cordless tools

The Estry EZ502 is a 2.4V 3000mAh Ni-MH pack built to match the original specifications for National models such as EZ502, EY503B, EY6220B and EY6220DR. It suits technicians and DIY users who need a direct replacement for worn cells in compatible drills or drivers.

Safety certifications and protection circuitry

The cell carries ISO9001, RoHS, CE, UN38.3 and MSDS approvals, confirming compliance with international quality and environmental standards. Integrated overcharge, over-discharge, over-voltage and short-circuit protection helps extend service life and reduces the risk of damage during heavy use.

Compact form factor with broad model coverage

At 100.41 x 37.79 x 37.79 mm and 208.4 g, the pack fits the existing battery bay without modification. The part-number list covers EZ902, EY9021, EY903, 6538, 6539, 6540, 6545, 6546, 6547, 6550 and EZ503, so one SKU replaces many legacy codes.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $21.99
Pricier than about 80% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameNi-MH
Model name3,000 mAh
In the box
Battery pack size1 Year

Questions about this item

How often will the 3000mAh Ni-MH pack need to be replaced under normal daily use?

The pack carries a one-year battery-pack specification and is built with overcharge, over-discharge, over-voltage and short-circuit protection to extend usable life.

What is the first limitation you hit when running the 2.4V 7.2Wh cell continuously?

Capacity is rated at 3000mAh, so runtime ends when the 7.2Wh energy reserve is depleted.

Does the 208.4g battery get hot or noisy during all-day operation?

Ni-MH chemistry runs silently; the protection circuit limits voltage and temperature, keeping heat low during extended use.

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