Radio Shack 23-546 Replacement Battery 2.4V 700mAh Ni-MH

Radio Shack 23-546 / 43-206 Series — 2.4V Ni-MH 700mAh Replacement Battery

This is a 2.4V, 700mAh Ni-MH battery pack for Radio Shack cordless handsets including the 23-546, 23-930, and 43-206. It replaces the original cell when the handset no longer holds a charge or dies quickly off the base. Voltage and connector match the original Radio Shack specification.

• Multi-model fit across the 23-546 family: These handsets share the same 2.4V two-cell Ni-MH rail and physical battery bay, so one pack covers the 23-546, 23-930, 43-206, and 23546 variants. The base station charges at the same trickle rate across all of them.
• Bench tested on actual hardware: We cycled this pack through the base station charger and confirmed the BMS accepted charge from a flat state, reached cutoff cleanly, and showed no voltage sag during a simulated RF transmit load.
• First-cycle charge on NiMH cordless handsets: After installing, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells in cordless phones need a slow initial charge to reach rated capacity — skipping this leaves you starting with less than 700mAh from day one.

Base station showing no charge or error light after swapping in this pack

Radio Shack base stations check for a minimum voltage before starting the charge cycle. A new NiMH pack shipped from storage can sit below 2.0V — low enough that the base registers it as a fault rather than a dischargeable battery. This is not a defective cell. Place the handset in the base anyway and leave it undisturbed; most units will retry the charge circuit within 15–30 minutes once the pack warms slightly. If the error light persists past an hour, confirm the contacts on the handset and base are clean and making full contact.

Handset not pairing with base after battery replacement

Removing power from a DECT handset — even briefly — can wipe the pairing stored in the handset's volatile memory. The base and handset lose each other's registration, so the handset shows no line or searches indefinitely. This is not a battery fault. Re-register the handset using the pairing button on the base unit; on most Radio Shack DECT models, hold the base page/find button for five seconds until the handset prompts for a PIN, then enter 0000.