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Rectangular Ni-MH battery pack, blue shrink wrap, 50.43 by 42.54 by 14.4mm

Estry

Estry CLT9581 Ni-MH standard battery 3.6V 1200mAh

SKU CH-T7ST-M0G18 MPN CLT9581

A 3.6 V, 1200 mAh Ni-MH battery replacing Radio Shack CLT9581, CLT908A, TAD727, CLT920, CLT2435, CLT9903, CLT9820, CLTA902, CLT9930, CLT2420 and TAD728 packs

  • Specifications3.6
  • Battery Pack1 Year
  • Ni-MH chemistry provides 3.6V 1200mAh capacity for reliable cordless phone power
  • Exact-fit replacement matches original specifications for Radio Shack CLT9581 and compatible models
  • Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS for quality assurance
  • Compact 50.43 x 42.54 x 14.4 mm pack weighs 90.3 g for easy installation

Direct replacement for cordless phones

This 3.6V Ni-MH pack replaces the original CLT9581 battery in compatible Radio Shack handsets. It matches the factory voltage and 1200mAh capacity so the phone charges and runs exactly as designed. The 4.32Wh energy rating supports typical daily talk and standby cycles. Build quality is verified by ISO9001, RoHS, CE, UN38.3 and MSDS certifications.

Upgrade from worn or lower-capacity cells

Swap this pack in when the original no longer holds a full charge or talk time drops noticeably. The 1200mAh rating restores the runtime the handset was engineered for without modifying the charger or cradle. It also supersedes earlier CLT908A and TAD727 packs that may have shipped with less capacity. The jump is worth it whenever the handset dies before the day ends.

Handles daily cordless use.

The 1200mAh cell comfortably powers standard DECT or analogue handsets through multiple calls and extended standby. It runs out quickly if used in equipment that draws significantly more current than a typical phone base allows. Dimensions of 50.43 x 42.54 x 14.4mm and 90.3g weight fit the original battery compartment. Buyers needing longer runtime than 1200mAh provides should look for a higher-capacity pack instead.

Highlights

  • Ni-MH chemistry provides 3.6V 1200mAh capacity for reliable cordless phone power
  • Exact-fit replacement matches original specifications for Radio Shack CLT9581 and compatible models
  • Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS for quality assurance
  • Compact 50.43 x 42.54 x 14.4 mm pack weighs 90.3 g for easy installation

Specifications

BrandNi-MH
Model1200mAh
Specifications3.6
Battery Pack1 Year

Questions about this item

Will the 50.43 x 42.54 x 14.4 mm pack fit my handset battery compartment?

The pack measures 50.43 x 42.54 x 14.4 mm and weighs 90.3 g; compare those dimensions with the cavity in your CLT9581, CLT908A, TAD727, CLT920, CLT2435, CLT9903, CLT9820, CLTA902, CLT9930, CLT2420 or TAD728 handset before ordering.

How do I install the battery and what step is often missed?

Open the handset battery cover, disconnect the old pack, connect the new 3.6 V 1200 mAh Ni-MH pack observing the correct polarity, replace the cover, then place the handset on its base for a full initial charge — skipping that first full charge is the common mistake.

When will the 1200 mAh Ni-MH pack need replacing?

Expect roughly one year of typical cordless-phone use before capacity drops noticeably; the pack carries a one-year battery-pack warranty and meets ISO9001, RoHS, CE, UN38.3 and MSDS standards.

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