Radio Shack 23271 Cordless Phone Replacement Battery 3.6V 2000mAh

Radio Shack 23271 / 23295 / 26305 — 3.6V Ni-MH Replacement Battery (23-935)

This is a 3.6V, 2000mAh Ni-MH replacement battery for Radio Shack cordless phone handsets. It fits the 23271, 23295, 26305, 43682, and seven additional models sharing the same OEM part number 23-935. Drop this in when the original pack no longer holds enough charge to get through a normal day of calls and standby.

• Multi-model fit — 23271 through 43682 series: These handsets share the same 3.6V three-cell NiMH pack, connector pinout, and base-station charge circuit. One battery number covers the full range.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a NiMH-compatible analyzer. The BMS accepted charge correctly and voltage held steady at 3.6V nominal across the test window.
• First-charge protocol for NiMH 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 — a quick top-up will leave the pack undercharged and talk time will appear short.

Base station showing no charge or flashing error light on a new NiMH pack

NiMH batteries lose voltage during storage. If the pack voltage drops far enough, the base station's charge controller may not recognise it as a valid battery and will refuse to start a charge cycle. This is a threshold detection issue, not a faulty battery. Some Radio Shack bases require the pack to be above roughly 3.0V before the charge IC will engage. If the error persists after seating the handset, remove it for 30 seconds and reseat firmly — this resets the handset's charge negotiation with the base.

Range drops noticeably mid-call after the battery swap

A fresh NiMH pack that hasn't completed its first full conditioning cycle will sag under RF transmit load. DECT radios draw a burst of current each time the handset transmits, and an undercharged NiMH pack can't hold voltage steady through those bursts. The handset interprets the voltage drop as low battery and reduces transmit power, cutting range. Run three full charge-and-use cycles — charge to full, use until the low-battery indicator appears, then charge again to 100% — and range will stabilise at rated levels.