Southern Telecom MC1000 Cordless Phone Replacement Battery 3.6V

SOUTHERN TELECOM MC1000 / MC1000HS — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 700mAh Ni-MH battery for the SOUTHERN TELECOM MC1000 and MC1000HS cordless phone handsets. It replaces the original pack when the handset no longer holds a charge or drops calls mid-conversation. Dimensions are 45.90 x 31.20 x 10.70mm — confirm these match your existing cell before fitting.

• MC1000 and MC1000HS compatibility: Both handsets share the same battery bay dimensions, connector pinout, and 3.6V charging rail from the base station. One battery fits both variants without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the MC1000 platform. The BMS accepted the pack cleanly, the base station charge indicator lit correctly, and voltage held stable across the talk circuit under RF load.
• First charge on NiMH cordless handsets: Place the handset in the base for a full 16 hours before first use. NiMH cells shipped from storage sit at partial charge — a slow first charge lets the cells reach rated capacity. Skipping this step is the main reason new batteries test short on talk time.

Talk time shorter than original battery after replacement

NiMH cells need three to five full charge and discharge cycles to reach rated capacity. On cycle one, you may see noticeably shorter talk time — this is normal cell behaviour, not a fault. Each subsequent full cycle pushes the capacity closer to the rated 700mAh. Run the handset to low charge and return it to the base for a full 16-hour charge three to five times before drawing conclusions about capacity.

Base station charge light not activating on a freshly installed pack

NiMH cells in storage drift to a resting voltage below the threshold some base stations use to confirm a valid pack is seated. The base may show no charge light or an error indicator when the pack first goes in. Seat the handset firmly in the cradle and leave it undisturbed — most base stations will begin trickle charging within a few minutes once the voltage climbs above the acceptance floor. If the light still does not activate after 30 minutes, reseat the handset and check that the charging contacts on both the handset and base are clean and making solid contact.