Alcatel Mobile 100 Reflexes 3.6V Ni-MH Replacement Battery 3BN78319

Alcatel Mobile 100 Reflexes / OmniPCX — 3.6V Ni-MH Replacement Battery (3BN78319)

This is a 3.6V, 700mAh Ni-MH replacement battery for the Alcatel Mobile 100 Reflexes cordless handset and compatible OmniPCX Office and OmniPCX Enterprise handsets. It replaces OEM part numbers including 3BN78319, 3BN67315AA, and 3BN67138AA. Dimensions are 51.09 x 36.94 x 11.11mm — verify your original battery matches before ordering.

• Mobile 100 Reflexes, OmniPCX Office, OmniPCX Enterprise compatibility: These handsets share the same 3.6V single-cell Ni-MH form factor and connector pinout. The base station charges at a fixed low-current rate matched to this chemistry — swapping in a Li-ion pack would not charge correctly and may trigger a fault indicator.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a cordless phone test rig. The cell voltage held above 3.2V under light RF transmit load, and the base station accepted the charge cycle without error on the first attempt.
• First charge after installation: Place the handset in the base for a full 16 hours before using it. Ni-MH cells shipped in storage state sit at reduced voltage — the base station's slow trickle charge brings them to rated capacity over that window. Skipping this step and using the phone immediately will shorten available talk time on early cycles.

Why the Mobile 100 Reflexes shows a charging error on a brand-new Ni-MH pack

Alcatel base stations check incoming cell voltage before starting a charge cycle. A fresh replacement Ni-MH pack stored for months can drop to 3.0V or below — some base stations read that as a fault condition and flash an error rather than charging. The fix is to leave the handset seated in the base undisturbed for at least 30 minutes. The base will eventually recognise the pack and begin a trickle charge, bringing voltage up to the acceptance threshold before switching to normal charge mode.

Talk time shorter than expected for the first several uses after swap

Ni-MH cells do not deliver full rated capacity on the first cycle out of storage. Capacity builds across three to five full charge-and-discharge cycles as the cell chemistry activates fully. If talk time is noticeably short after the first day of use, that is normal behaviour — not a faulty cell. Run the handset until the low-battery indicator appears, return it to the base for a full charge, and repeat; by cycle four or five, the pack will be operating at or near its 700mAh rating.