Toshiba BT1002 Cordless Phone Replacement Battery 2.4V 800mAh

Toshiba DCX100 / DECT 160 / DECT 180 — 2.4V Ni-MH Replacement Battery (BT1002)

This is a 2.4V, 800mAh Ni-MH replacement battery for Toshiba cordless phones including the DCX100, DECT 160, and DECT 180. It slots into the handset and restores power to the wireless unit when the original pack no longer holds a charge. OEM part numbers BT1002, BT-1002, BBTG0609001, BBTG0645001, and CBC1002 all cross-reference to this cell.

• DCX100, DECT 160, DECT 180 compatibility: These three handsets share the same 2.4V two-cell NiMH pack format, identical connector pinout, and the same base station charging circuit — so one battery covers all three models without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the DCX100 platform. The BMS accepted charge current from the base station on the first seating, and cell voltage held within the expected NiMH plateau across multiple cycles.
• First-charge protocol for NiMH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before using it. NiMH cells in cordless phones need a slow, uninterrupted first charge to reach rated capacity — pulling the handset off the base early on cycle one cuts into the capacity you get on cycles two and three.

Range reduced on the DCX100 after a battery swap

A fresh NiMH pack that hasn't been conditioned will show a lower resting voltage than a fully cycled one. The DCX100's RF transmitter draws a spike of current each time it sends a signal to the base. If the cell voltage sags under that load — common in the first two or three cycles — the handset drops transmit power, and range shrinks noticeably. Run three full charge and discharge cycles and the cell voltage stabilises. Range typically returns to normal by cycle four.

Base station shows no charge light after installing a new pack

NiMH packs discharged during storage can sit below the voltage threshold the Toshiba base station expects before it initiates a charge cycle. If the base shows no light or an error state, the pack voltage is likely too low for the base to recognise. Remove the handset, wait 30 seconds, and reseat it firmly — a solid connection sometimes triggers a fresh detection attempt. If the base still shows no charge activity after reseating, check that the handset contacts and base cradle contacts are clean and making full metal-to-metal contact.