DeTeWe Twinny Master Replacement Battery 3.6V 750mAh Ni-MH

DeTeWe Twinny Master — 3.6V Ni-MH Replacement Battery (145306002110)

This 3.6V, 750mAh Ni-MH cell replaces the original rechargeable battery in the DeTeWe Twinny Master cordless DECT handset. It also fits the Twinmaster, Twinny, and 3GP4E handsets that share the same voltage rail and connector. Sourced to match OEM part numbers 145306002110, 1453.060-02110, 1453.060-02111, and 3GP4E.

• Twinny Master handset family: The Twinny Master, Twinmaster, Twinny, and 3GP4E all run on the same 3.6V single-cell Ni-MH pack with an identical contact footprint. One pack covers the group because the base station charging circuit is calibrated to the same voltage and charge rate across the range.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the Twinny Master base station, confirming the BMS accepted the cell without throwing a charge error and that voltage held steady under DECT transmit load.
• First-charge protocol for Ni-MH cordless packs: After installing, seat the handset in the base and leave it undisturbed for a full 16 hours before first use. Ni-MH cells in cordless phones need that slow initial charge to reach rated capacity — pulling the handset early will leave you with a noticeably shorter first cycle.

Talk time shorter than the original battery after replacement

Ni-MH cells leave storage partially discharged and take three to five full charge-discharge cycles before they hit rated capacity. On cycle one, you may get noticeably less talk time than the old battery at its best — that is normal cell behaviour, not a fault. Run the handset until it signals low battery, then return it to the base for a full charge. Repeat this three to five times and capacity will stabilise at the 750mAh rating.

Base station showing no charge or error light after new pack installed

A Ni-MH pack that has sat in storage for months can arrive with a resting voltage low enough that the Twinny Master base station refuses to begin a charge cycle — the base reads the cell as faulty rather than flat. Remove the battery, let it sit at room temperature for 30 minutes, then reinstall it and reseat the handset firmly in the cradle. If the error light clears within a few minutes the base has accepted the pack; if not, check that the handset contacts are clean and making full contact with the cradle pins.