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Small rectangular Ni-MH battery pack green wrap 3.6V 600mAh

Estry

Estry 43-5511 3.6V 600mAh Ni-MH standard battery

SKU CH-MTHK-PVV63 MPN 43-5511

Replaces Radio Shack cordless-phone packs with a 3.6 V 600 mAh Ni-MH cell

  • Battery pack size1-pack
  • Battery typeNi-MH
  • Battery capacity600 mAh
  • Battery voltage rating3.6
  • Product typeBatteries
  • Direct replacement for Radio Shack 43-5511 and SP504 models
  • 600mAh Ni-MH capacity powers cordless phones and devices reliably
  • Built-in overcharge and short-circuit protection extends service life
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards
  • Compact 42.57 x 30.2 x 14.43 mm size fits original battery compartments

Exact replacement for Radio Shack cordless phones

This Estry 43-5511 Ni-MH pack supplies 3.6V and 600mAh in a single cell measuring 42.57 x 30.2 x 14.43mm and weighing 77.4g. It matches the original part numbers 43-5511, 43-1051, SP504, 23197, CS90016, 435503, CS0139, 43-5506 and SP-506. The battery carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications.

Steady 3.6V output through repeated charge cycles

Nickel-metal-hydride chemistry delivers consistent voltage during long talk or standby periods without the memory effect that shortens usable time on older chemistries. Built-in protection guards against overcharge, over-discharge, over-voltage and short-circuit events to preserve the 2.16Wh capacity over many cycles.

Verify your handset model

This pack fits only the Radio Shack part numbers listed above; other cordless phones or devices using different pin layouts or voltage ratings will not work. Check the label on your original battery for an exact match to 43-5511, 43-1051, SP504, 23197, CS90016, 435503, CS0139, 43-5506 or SP-506.

How it compares

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

Price $10.99
Typical for this category: the median of 10,440 items is $10.99.

Specifications

Product
Brand nameRadio Shack
Product typeBatteries
Power
Battery typeNi-MH
Battery capacity600 mAh
Battery voltage rating3.6
In the box
Battery pack size1-pack

Questions about this item

Does the 3.6 V Ni-MH cell generate noticeable heat during continuous use?

The pack is rated at 3.6 V and 600 mAh; normal operation produces only slight warmth, and built-in over-voltage and short-circuit protection limits temperature rise.

What device or connector must I already have for this 43-5511 pack to function?

It replaces Radio Shack models 43-5511, 43-1051, SP504, 23197, CS90016, 435503, CS0139, 43-5506 and SP-506, so the host device must accept one of those part numbers.

Will the 42.57 × 30.2 × 14.43 mm dimensions fit the battery compartment of my older Radio Shack unit?

The pack measures 42.57 mm by 30.2 mm by 14.43 mm and weighs 77.4 g, matching the original 43-5511 form factor for direct drop-in replacement.

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