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Rectangular silver Ni-MH battery pack with two contacts

Estry

Estry 1800mAh 2.4V Ni-MH battery BP-DM10

SKU CH-X5BP-CX7SR

Replacement Ni-MH pack delivers 2.4 V and 1800 mAh for Discman D-220, D-4215P, ESP D-421SP, D-321 and D-223 models

  • Battery pack size1 Year
  • Details2.4
  • Reliable power for Discman models including D-220 D-4215P ESP D-421SP D-321 D-223
  • 1800mAh capacity at 2.4V delivers 4.32Wh for extended playback time
  • Built-in protection against overcharge over-discharge over-voltage and short circuit safeguards battery life
  • Compact 50.0 x 29.8 x 16.5mm size weighing 83.0g fits original battery compartment
  • Certified to ISO9001 RoHS CE UN38.3 and MSDS standards for quality assurance

Direct replacement for Discman portables

The Estry BP-DM10 is a nickel-metal-hydride pack rated at 2.4 V and 1800 mAh. It fits the Discman D-220, D-321, D-223, D-4215P and ESP D-421SP models. The cell measures 50.0 × 29.8 × 16.5 mm and weighs 83.0 g. Built-in protection guards against over-charge, over-discharge, over-voltage and short circuits.

Ni-MH chemistry and fixed voltage

Nickel-metal-hydride cells deliver a steady 2.4 V output without the memory effect of older chemistries. The pack cannot be fast-charged beyond the limits of the original Discman charger. Capacity drops in freezing temperatures and the pack will not power devices that require a higher nominal voltage.

4.32 Wh capacity for typical playback

At 4.32 Wh the battery supports several hours of CD playback on a fresh charge. Heavy use such as high-volume listening or frequent track skipping reduces run time noticeably. The pack is not suited for devices that draw more current than the original Discman circuitry was designed to supply.

How it compares

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

Price $12.99
Pricier than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameNi-MH
Model name1,800 mAh
In the box
Battery pack size1 Year

Questions about this item

Which Discman models does the 1800mAh 2.4V pack replace?

It is a direct replacement for Discman D-220, D-4215P, ESP D-421SP, D-321 and D-223, matching the original BP-DM10 part number.

What run-time can I expect from the 1800mAh capacity in a portable player?

The 1800mAh rating at 2.4V delivers 4.32Wh, typically powering a compatible Discman for several hours of continuous playback per full charge.

Does the 2.4V Ni-MH chemistry limit charging options?

The pack uses standard 2.4V nickel-metal-hydride chemistry and includes over-charge, over-discharge, over-voltage and short-circuit protection for safe charging in the original device.

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