Conair 700 Cordless Phone Replacement Battery 3.6V 600mAh

Conair 700 / CTP4000 Series — 3.6V Ni-MH Replacement Battery

This 3.6V, 600mAh Ni-MH battery replaces the original handset pack in Conair cordless phone models including the 700, 700A, CTP4000, and CTP400Q. It restores power to the handset so the phone operates wirelessly within range of the base station. Swap it in when the original pack no longer holds enough charge to sustain a call.

• 700 and CTP series compatibility: These models share the same 3.6V three-cell NiMH pack format, matching connector pin-out and physical footprint. One battery covers the full range listed above without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a NiMH-compatible analyser. The cell voltage held within spec across discharge, and the base station accepted the pack without triggering a fault light.
• First charge after installation: Place the handset in the base cradle for a full 16 hours before using it. NiMH packs ship partially discharged and need a slow, uninterrupted initial charge to reach rated 600mAh capacity — skipping this step leaves the first few cycles noticeably short.

Base station showing no charge or error light after swap

A NiMH pack that has been in storage can drop well below 3.0V. Some Conair base stations check pack voltage before enabling the charge circuit — if the voltage is too low, the base reads it as a fault and refuses to charge. Leave the handset seated in the base for 30 to 60 minutes anyway; many bases trickle-charge at low voltage before switching to full charge. If the error light clears within an hour, the pack is recovering normally. If it does not clear after 90 minutes, check that the handset contacts are making clean contact with the base cradle pins.

Range drops noticeably when the handset moves away from the base

DECT handsets draw a sharp current spike when the RF transmitter fires — more than steady-state standby draw. A NiMH pack that has not yet completed its first few conditioning cycles shows higher internal resistance, and voltage sags under that RF load. The handset interprets the sag as low battery and reduces transmit power, cutting range. Run three to five full charge-and-use cycles and range should stabilise as internal resistance drops toward the rated figure.