Radio Shack 23-967 Cordless Phone Replacement Battery 2.4V 1500mAh

Radio Shack 23-967 — 2.4V Ni-MH Replacement Battery for Cordless Phones

This is a 2.4V, 1500mAh Ni-MH replacement battery for Radio Shack cordless phone handsets, cross-referencing OEM part numbers 23-967, 43-9030, and RS-230-0967. It fits the same physical bay and connector as the original pack. Verify your handset's battery compartment label against those part numbers before ordering.

• Multi-part-number coverage: Radio Shack used at least three separate part numbers for the same 2.4V Ni-MH cell across different handset production runs. The voltage rail, connector pitch, and contact polarity are identical across all three, so one replacement covers the full spread.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a 2.4V Ni-MH-compatible charger. The BMS accepted charge normally, held voltage under light RF-simulate load, and showed no false-full cutoff on the first three cycles.
• First-charge protocol for Ni-MH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before the first call. Ni-MH cells shipped in partial-charge state — a slow initial charge lets each cell in the pack reach equal capacity and prevents one cell dragging the other down prematurely.

Base station showing a charging error light after fitting a new Ni-MH pack

Radio Shack base stations use a delta-V detection circuit to confirm a valid Ni-MH pack is seated. A battery that arrives from storage at very low voltage — sometimes below 2.0V across the pack — sits outside the window the base expects to see at charge start. The base reads that as a fault rather than a depleted pack and throws an error light instead of beginning charge. The fix is straightforward: trickle-charge the pack externally at around 50mA for 20–30 minutes to bring resting voltage above 2.1V, then reseat it in the base. At that voltage the delta-V circuit recognises the pack and normal fast-charge begins.

Talk time shorter than original battery after the first few uses

Ni-MH cells do not ship at rated capacity — they need three to five full charge-discharge cycles before the crystal structure in the electrode settles and the cell reaches its rated 1500mAh. If talk time feels short immediately after install, that is normal and not a fault with the pack. Each subsequent full charge-to-discharge cycle adds measurable capacity until the cell plateaus around cycle four or five. Run the handset until it signals low battery, return it to the base for a full charge, and repeat — do not top-up mid-cycle during the conditioning window.