Memorex MPH2410 Cordless Phone Replacement Battery 3.6V 1200mAh

Memorex MPH2410 / MPH6931 Series — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 1200mAh Ni-MH replacement battery for the Memorex MPH2410, MPH2430, MPH6931, and MPH6991 cordless handsets. It slots into the battery compartment and restores wireless operation when the original pack can no longer hold a charge. Voltage and cell count match the OEM spec exactly.

• MPH2410, MPH2430, MPH6931, MPH6991 compatibility: All four handsets run the same 3.6V three-cell NiMH pack with identical connector orientation and charge termination voltage. The base station charges at a trickle rate timed to this chemistry — swapping in a different voltage would confuse the charge circuit.
• Bench tested on actual hardware: We cycled this pack on the MPH2410 base station and confirmed the charge indicator lit within 30 seconds of docking. The BMS accepted full charge without triggering a fault light, and voltage at full charge read 4.2–4.4V across the terminals.
• 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 cordless phone packs ship partially discharged — a slow first charge lets all three cells reach balanced capacity and prevents one cell from reversing under load.

Base station showing charging error on a new NiMH pack

NiMH batteries lose voltage during storage. If a pack sits in a warehouse for several months, terminal voltage can drop below 3.0V — low enough that some Memorex base stations read the pack as faulty rather than deeply discharged. The base is looking for a minimum threshold before it starts trickle charging. Place the handset in the base and wait 10–15 minutes; most bases will begin a recovery charge once they detect any voltage at all. If the error light stays on after 20 minutes, remove the handset, wait 30 seconds, and re-dock — this resets the charge controller's detection cycle.

Range drops during a call after the battery swap

Reduced range after a battery replacement usually points to voltage sag under RF transmit load, not a pairing or antenna fault. The DECT radio in these handsets draws a short current spike each time it transmits — a NiMH pack that hasn't completed its first full conditioning cycle will sag under that load, cutting transmit power. Run three full charge-and-use cycles before judging range performance. After conditioning, resting voltage should hold above 3.6V between transmissions.