T-Com Octophone 8232 Replacement Battery 3.7V 1200mAh

T-Com Octophone 8232 / 8242 — 3.7V Li-ion Replacement Battery

This is a 3.7V Li-ion battery rated at 1200mAh (4.44Wh) for the T-Com Octophone 8232 and Octophone 8242 cordless DECT handsets. It replaces the original cell when the handset no longer holds a useful charge. Dimensions are 53.20 x 34.00 x 5.70mm — measure your existing cell before ordering if you are unsure.

• Octophone 8232 and 8242 compatibility: Both models share the same handset housing, battery bay dimensions, and connector orientation. The voltage rail and cell footprint are identical across the pair, so one part number covers both.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a DECT handset platform. The protection circuit cut in correctly at low-voltage threshold and accepted charge from a standard base station without fault.
• First charge after installation: Place the handset in the base and leave it for a full uninterrupted charge before using it. Li-ion cells that have been in storage for several months may show a reduced first cycle — a complete charge from the base resolves this and brings the cell to rated capacity.

Talk time shorter than the original battery after replacement

A Li-ion cell shipped from storage arrives at a partial state of charge — often 40–60% of rated capacity. The first one or two full charge cycles are needed before the cell delivers its full 1200mAh. If talk time still seems short after three full cycles, check that the handset sits flush in the base and that the base charging contacts are clean. A dirty contact on the Octophone base can reduce charge current and leave the cell consistently undercharged.

Handset not pairing with base after battery swap

Removing the battery from a DECT handset clears the volatile memory that stores the base pairing. The Octophone 8232 and 8242 do not retain pairing data without power. After fitting the new battery, you will need to re-register the handset to the base using the pairing procedure in the base station menu — typically held under Settings or Registration. Once re-registered, the handset operates normally.