Telecom AMARYS 2200SF Replacement Battery 3.6V 300mAh

Telecom AMARYS 2200SF — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 300mAh Ni-MH rechargeable battery for the Telecom AMARYS 2200SF cordless handset. It replaces the original cell when the handset stops holding charge or talk time drops noticeably. Dimensions are 30.00 × 32.00 × 10.50mm — confirm these match your existing cell before fitting.

• AMARYS 2200SF handset fit: The AMARYS 2200SF uses a compact single-cell Ni-MH pack at 3.6V. This battery matches that voltage rail and physical footprint, so the handset's charge circuit sees the correct input without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench. The Ni-MH chemistry reached rated capacity by cycle three — output voltage held steady across the discharge curve without unexpected sag.
• First charge on the AMARYS 2200SF: After fitting, seat the handset in the base station and leave it for a full 16 hours before use. Ni-MH cells in cordless phones need this slow initial charge to reach rated capacity — skipping it locks in a lower usable ceiling from the start.

Base station showing a charging error after fitting a new Ni-MH pack

A Ni-MH cell that has sat in storage will have a lower resting voltage than a fully charged pack. Some DECT base stations read this low voltage as a fault and refuse to start a charge cycle. The fix is to leave the handset seated in the base for at least 30 minutes without removing it — most base circuits will detect the cell and begin a trickle charge once the initial handshake passes. If the error light stays on after 30 minutes, remove the handset, wait 10 seconds, and re-seat it to trigger a fresh detection cycle.

AMARYS 2200SF losing range after a battery swap

Reduced range after a battery replacement usually points to voltage sag under RF transmit load. When a Ni-MH cell is not yet conditioned, its internal resistance is higher — voltage drops the moment the radio module draws current to transmit, and the handset pulls back signal strength to compensate. This is not a faulty battery. Run three full charge and discharge cycles through normal use and the internal resistance drops as the chemistry settles. Range typically returns to normal by cycle four.