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Small rectangular Ni-MH battery pack with flat sides and wire connector

Estry

Estry 4345 3.6 V 600 mAh Ni-MH standard battery

SKU CH-YHEZ-ZSD6A MPN 4345

Ni-MH 3.6 V 600 mAh replacement battery compatible with AT&T 4345, 4605, HT4410, 22204X and E5828 models

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeNi-MH
  • Battery Capacity600mAh
  • Battery Voltage3.6
  • Compatible with AT&T 4345 and 4605 handsets
  • 6 V 600 mAh Ni-MH chemistry matches original spec
  • Built-in overcharge and short-circuit protection
  • ISO9001, RoHS, CE and UN38.3 certified
  • Compact 42.57 × 30.2 × 14.43 mm, 77.4 g

Direct replacement for AT&T cordless phones

This Ni-MH battery pack matches the original 3.6 V 600 mAh specification for AT&T models 4345, 4605, HT4410, 22204X and E5828. It fits the handset battery compartment without modification and restores talk time to factory levels. The single pack design suits users replacing one handset at a time.

Low self-discharge chemistry with protection circuit

The nickel-metal hydride cell holds charge during standby and delivers steady voltage during calls. Built-in overcharge, over-discharge, over-voltage and short-circuit protection limits heat rise and extends cycle life. Normal charging and daily use remain quiet and cool.

3.6 V 600 mAh Ni-MH capacity

This exact voltage and capacity combination determines compatibility with the listed AT&T handsets. Buyers needing a different voltage, higher capacity or lithium chemistry will not be able to use this pack in those models.

Highlights

  • Compatible with AT&T 4345 and 4605 handsets
  • 6 V 600 mAh Ni-MH chemistry matches original spec
  • Built-in overcharge and short-circuit protection
  • ISO9001, RoHS, CE and UN38.3 certified
  • Compact 42.57 × 30.2 × 14.43 mm, 77.4 g

Specifications

BrandAT&T
TypeBatteries
Battery Pack1-pack
Battery TypeNi-MH
Battery Capacity600mAh
Battery Voltage3.6

Questions about this item

How do I install this 4345 Ni-MH pack and which step do people get wrong?

Open the handset compartment, align the 4501 connector exactly as the original pack sat, press until it seats, then charge fully before first use.

What maintenance or replacement will this 600 mAh 3.6 V battery need later?

Expect gradual capacity loss after several hundred cycles; replace when talk time drops below half of the original 2.16 Wh rating.

What limit appears first under sustained use of this 77.4 g pack?

Internal resistance rise cuts usable voltage during long calls, so the 3.6 V nominal level sags before the cell reaches end of life.

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