Emporia MegaPhone D17BB Replacement Battery 2.4V 600mAh

Emporia MegaPhone D17BB — 2.4V Ni-MH Replacement Battery

This is a 2.4V, 600mAh Ni-MH rechargeable battery for the Emporia MegaPhone D17BB cordless handset. It replaces the original pack inside the handset, restoring charge capacity when the existing cell has degraded. Dimensions are 45.00 × 21.00 × 10.00mm — confirm these against your current battery before ordering.

• MegaPhone D17BB fit: The D17BB handset runs a 2-cell Ni-MH configuration at 2.4V. This pack matches that voltage rail and physical form factor, so the base station charge contacts align correctly.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a 2.4V Ni-MH test rig. The cell voltage stabilised within expected Ni-MH range and the base station accepted the charge handshake without error.
• First charge on the D17BB: After installing, seat the handset in the base for a full 16-hour charge before making any calls. Ni-MH cells in cordless phones need a slow initial charge to reach rated capacity — skipping this step will leave the pack short of its 600mAh ceiling.

Range drop under RF load on a fresh Ni-MH pack

The D17BB transmitter draws a short current burst each time it communicates with the base. A Ni-MH cell that hasn't completed its first full conditioning cycle has higher internal resistance than a fully broken-in pack. That resistance causes a brief voltage sag during the RF burst, which the handset reads as low battery and throttles transmit power. Run three to five full charge-discharge cycles and the internal resistance drops — range recovers without any change to the handset settings.

Base station shows no charge or error light after fitting new battery

Ni-MH cells shipped in storage often sit below 2.0V — sometimes as low as 1.6V across both cells. Some cordless base stations won't initiate a charge cycle until the pack voltage clears a minimum acceptance threshold. If the base shows no activity after seating the handset, remove the handset, wait 10 seconds, and reseat it firmly. If the base still shows no charge light, trickle-charge the pack externally to at least 2.2V before returning it to the base — that voltage is enough to trigger normal charge acceptance.