Uniross BC101272 Cordless Phone Replacement Battery 3.6V 600mAh

Uniross BC101272 — 3.6V Ni-MH Replacement Battery (BC101272)

This Uniross 3.6V, 600mAh Ni-MH battery replaces part numbers BC101272, 29H, NC2136, and CP15NM in compatible cordless phone handsets. It fits the same footprint as the original pack at 45.30 x 31.10 x 10.75mm. Install it when your handset no longer holds a charge or drops calls mid-conversation due to a degraded original cell.

• Cordless phone handset fit: These OEM part numbers share the same 3.6V single-cell Ni-MH format and connector pinout used across a wide range of DECT cordless handsets. Voltage rail and physical size must match exactly — this pack meets both requirements for any handset referencing these part numbers.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a DECT handset platform. The BMS in the base station accepted the cell without throwing a charge fault, and voltage held steady across the RF transmit load spikes during calls.
• First charge on Ni-MH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before use. Ni-MH cells shipped in storage discharge reach rated capacity only after this slow initial charge — skipping it will leave you with noticeably reduced talk time from day one.

Talk time shorter than expected after the battery swap

Ni-MH cells do not deliver full rated capacity from the first cycle. A fresh pack from storage will typically perform below its 600mAh rating for the first three to five full charge-discharge cycles. Each cycle conditions the cell chemistry and gradually unlocks the rated capacity. Complete a full 16-hour charge, use the handset until it prompts low battery, then repeat — capacity improves with each cycle.

Base station showing no-charge or error light with a new pack

Cordless phone bases check incoming cell voltage before initiating a charge cycle. A Ni-MH pack stored for several months can drop below the base station's acceptance threshold — often around 3.0V or lower — causing the base to flag an error instead of charging. Remove the handset, wait 30 seconds, and re-seat it firmly to trigger a fresh detection cycle. If the error persists, the cell voltage may be too low for the base to recover; a brief trickle from a standalone Ni-MH charger to bring the pack above 3.2V will resolve it.