Toshiba EX3182 Cordless Phone Replacement Battery 3.6V 1200mAh

Toshiba EX3182 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 1200mAh Ni-MH battery for the Toshiba EX3182 cordless phone handset. It slots into the handset battery compartment and restores talk time and standby capacity lost to cell degradation. No OEM part number exists for this pack — the EX3182 is the confirmed fit model.

• EX3182 handset fit: The EX3182 runs a 3.6V Ni-MH cell block common to this generation of Toshiba DECT handsets. The voltage rail, cell arrangement, and connector match this handset's charging circuit directly.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the EX3182 platform and confirmed the base station accepted the charge handshake without error lights. BMS behaviour remained stable across multiple cycles.
• First-charge conditioning for Ni-MH: After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells ship partially discharged and need a slow initial charge to reach rated capacity — skipping this step will leave the pack under capacity from the start.

Talk time shorter than the original battery after replacement

New Ni-MH cells do not deliver full rated capacity on the first cycle. The cells need three to five full charge-and-discharge cycles to reach 1200mAh. During this break-in period, talk time will be noticeably shorter than expected — this is normal cell behaviour, not a defect. Run the handset until it warns low, return it to the base for a full charge, and repeat until capacity stabilises.

Base station shows no charge or flashes an error light after swap

Ni-MH packs lose voltage in storage — if the cell voltage drops below the base station's acceptance threshold, the charger circuit reads it as a fault and refuses to charge. Remove the handset, leave it out of the base for 30 seconds, then reseat it firmly. If the error persists, the pack may need a brief trickle charge via a compatible external charger to raise its voltage above the 3.0V acceptance floor before the base will take over.