Telekom T-Sinus 700 Micro Compatible Battery 3.6V 500mAh

Telekom T-Sinus 700 Micro / 710X Micro Series — 3.6V Ni-MH Replacement Battery (V30145-K1310-X250)

This is a 3.6V, 500mAh Ni-MH replacement battery for the Telekom T-Sinus 700 Micro cordless DECT handset. It also fits the T-Sinus 710X Micro, 710XA Micro, and 700m. Swap it when the original pack no longer holds a charge or the handset shuts down before a call ends.

• T-Sinus 700 and 710 Micro platform fit: These models share the same 3.6V single-cell NiMH architecture, identical connector orientation, and matching physical footprint — 53.60 × 36.95 × 7.95mm. The handset BMS accepts the same charge termination signal across all variants in this family.
• Bench tested on actual hardware: We cycled this pack through the T-Sinus 700 Micro base station and confirmed the charge circuit accepted the battery without fault, delta-V cutoff triggered at full charge, and the handset registered full bars on the status display.
• First-charge protocol for NiMH handsets: After installing, seat the handset in the base and leave it undisturbed for a full 16 hours before first use. NiMH cells in cordless phones ship partially discharged — a slow initial charge is what brings the pack to rated capacity.

Talk time shorter than original battery after replacement

New NiMH cells often deliver below-rated capacity for the first three to five charge cycles — this is normal cell conditioning, not a fault. The crystalline structure in fresh NiMH cells hasn't fully activated, so usable capacity starts low and climbs with each full cycle. Run the handset until it signals low battery, then return it to the base for a full charge. By cycle four or five, capacity should reach the rated 500mAh.

Base station shows no charge light or error after battery swap

A NiMH pack discharged below roughly 3.0V during storage can fall outside the voltage window the base station uses to detect a valid battery. The charger circuit sees an apparent open circuit and refuses to start. To recover the pack, some T-Sinus bases will trickle-charge a deeply discharged cell if the handset is removed and reseated firmly — try this two or three times. If the charge LED still does not activate, the pack voltage is too low for the base; use a standalone NiMH charger at 50mA for 30 minutes to bring the cells up to at least 3.2V, then return the handset to the base.