Estry 2150 standard battery Ni-MH 3.6V 600mAh

Replacement Ni-MH battery for Phone Mate handsets

The Estry 2150 is a 3.6V 600mAh nickel-metal-hydride pack built to match the original specifications for a long list of Phone Mate cordless models including 2150, CP-750, TC-510, TC950A, 2870, TC-535, TC530, TC508, TC540, 3201010, 2780, CP820, TC-530, 2250, CP850, TC-950A, 2000, TC-950, CP760, CP749 and CP725. It delivers 2.16Wh in a single-cell format measuring 42.57 x 30.2 x 14.43mm and weighing 77.4g. Overcharge, over-discharge, over-voltage and short-circuit protection are integrated for safer operation.

Practical limits of Ni-MH chemistry

Nickel-metal-hydride cells self-discharge faster than lithium types, so the pack will lose charge over weeks of storage and should be topped up before first use. Capacity is fixed at 600mAh; users needing longer talk time cannot increase it without changing to a different battery form factor. The chemistry performs best between 0°C and 40°C; extreme cold or heat will reduce available runtime and cycle life.

Compatibility checks before ordering

Verify that the handset model number appears in the supported list above and that the existing pack carries the same 3.6V 600mAh rating. Confirm the physical dimensions 42.57 x 30.2 x 14.43mm fit the battery compartment and that the connector polarity matches the original. This pack is not suitable for devices requiring a different voltage, chemistry or form factor.