Audioline DECT 5015 Replacement Battery 2.4V 750mAh

Audioline DECT 5015 — 2.4V Ni-MH Replacement Battery (BC101276)

This is a 2.4V, 750mAh Ni-MH replacement battery for the Audioline DECT 5015 cordless phone handset. It fits the handset battery compartment and restores full cordless operation to units with depleted or failed packs. OEM part numbers BC101276 and 08C/CP18NM both cross-reference to this cell.

• DECT 5015 handset fit: The DECT 5015 uses a two-cell 2.4V NiMH pack at 750mAh — a common cordless phone configuration where the base station charger circuit expects a specific charge acceptance voltage. Swapping to the correct cell count and chemistry keeps the base charge light behaving normally.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the bench, confirming the BMS and base station handshake. The cells accepted a charge current from a standard DECT base without triggering a fault state, and voltage held stable across the full discharge curve.
• First charge on NiMH cordless packs: After installing this battery, seat the handset in the base and leave it there for a full 16 hours before using it. NiMH cells stored in low-charge states need a slow, uninterrupted first charge to reach rated capacity — cutting it short delays conditioning and reduces initial talk time.

Talk time shorter than the original battery after replacement

NiMH cells leave storage at a partial charge, and the first two to three cycles after installation typically deliver less capacity than rated. The cells need full charge and discharge cycles to reach their electrochemical equilibrium. This is not a fault — it is how NiMH chemistry behaves after a dormant period. By cycles three to five, capacity should be at or near the rated 750mAh.

Base station charge light not coming on after fitting a new pack

DECT base stations check incoming voltage before accepting a charge — if the NiMH pack has dropped below roughly 1.8V total from extended storage, some bases read it as a fault rather than a flat battery. Remove the handset, wait 30 seconds, then re-seat it firmly to reset the charge detect circuit. If the light still does not come on, check that the handset contacts are clean and making full contact with the base cradle pins. A brief wipe of the gold contacts with a dry cloth is enough.