Agfeo Dect 50 Replacement Battery 3.7V 950mAh Li-ion

Agfeo Dect 50 — 3.7V Li-ion Replacement Battery

This 3.7V, 950mAh Li-ion battery replaces the original power cell in the Agfeo Dect 50 cordless handset. It restores talk time and standby capacity lost to cycle degradation on the original pack. Dimensions are 51.54 x 32.75 x 8.30mm — confirm these against your existing cell before fitting.

• Dect 50 handset fit: The Dect 50 runs a single-cell 3.7V Li-ion configuration. The BMS in this handset monitors cell voltage directly — a replacement cell must match the nominal voltage and physical footprint exactly, or the handset will not power on.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Dect 50 handset. The BMS accepted the cell without error, completed a full charge cycle, and held standby draw within normal parameters.
• First charge after installation: Place the handset in the base immediately after fitting this cell and leave it for a full charge before use. Li-ion cells shipped in storage state may read low enough to trigger the handset's low-battery cutoff within minutes of first use if you skip this step.

Talk time shorter than expected after fitting a new cell

A new Li-ion cell does not always deliver full rated capacity on the first cycle. The cell ships partially discharged for transport safety, and the BMS needs one or two full charge-discharge cycles to calibrate its capacity tracking. If talk time feels short after the first charge, run the handset until it shuts off, then charge it fully to 4.2V before using it again. Capacity typically stabilises after two to three full cycles.

Handset loses DECT pairing after battery replacement

Removing the original battery cuts power to the handset's volatile memory, which can wipe the stored base station pairing on some Dect 50 units. This is a firmware behaviour, not a fault with the replacement cell. To restore the link, initiate a fresh registration from the base station menu and follow the on-screen pairing sequence on the handset. Once re-registered, the handset operates normally.