Tevion GP0735 DECT Phone Replacement Battery 2.4V 600mAh

Tevion DECT Telefone MD82772 — 2.4V Ni-MH Replacement Battery (GP0735)

This is a 2.4V, 600mAh Ni-MH replacement battery for the Tevion DECT Telefone MD82772 cordless phone handset. It slots into the handset battery compartment and restores the phone to working order when the original cell no longer holds charge. OEM cross-references include GP0735, GP0747, GP0748, GP0827, GP0845, and 5M702BMXZ.

• MD82772 handset fit: The MD82772 uses a two-cell 2.4V Ni-MH pack in a flat form factor measuring 35.40 × 32.50 × 6.70mm. That physical envelope and voltage rail are what the base station charger circuit expects — swapping a different voltage pack will prevent charging or damage the charging circuit.
• Bench tested on actual hardware: We cycled this pack through the MD82772 base station and confirmed the BMS accepted the charge handshake without fault. Charge current held steady through the full charge cycle and the handset registered ready-to-use status at the base.
• First-charge conditioning for Ni-MH cordless packs: After installing, seat the handset in the base for a full 16-hour charge before first use. Ni-MH cells shipped in storage have partial discharge; the slow first charge lets each cell reach true rated capacity. Skipping this step is the most common reason users report short talk time on a new battery.

Talk time shorter than the original battery after replacement

New Ni-MH cells arrive partially discharged from storage and need three to five full charge-discharge cycles before they reach rated capacity. On the first cycle, you may get noticeably less talk time than expected — that is normal cell behaviour, not a fault with the battery. Each subsequent cycle conditions the cells further and capacity builds toward the 600mAh rating. Run three full cycles with the handset placed in the base until fully charged, then used until the low-battery indicator appears.

Base station charge light not coming on after battery swap

A Ni-MH pack that has been sitting in storage can drop below the voltage floor the base station charger uses to detect a valid battery — some DECT base circuits simply show no charge activity rather than an error. The fix is to briefly charge the pack externally with a compatible Ni-MH trickle charger at around 60mA for 30 minutes to raise cell voltage above the detection threshold. Once the pack reaches approximately 2.0V, reinsert the handset into the base and the charge indicator should activate. If the base still shows no activity after that, check that the handset contacts are clean and fully seated.