Essentiel B 8001496 Cordless Phone Replacement Battery 2.4V 300mAh

Essentiel B Comeback / 8001496 — 2.4V Ni-MH Replacement Battery

This is a 2.4V, 300mAh Ni-MH rechargeable battery for the Essentiel B cordless handset range. It fits the 8001496, 8003132, and Comeback models. Physical dimensions are 29.60 × 20.93 × 10.63 mm, matching the original battery bay exactly.

• 8001496, 8003132, and Comeback handsets: These three models share the same 2.4V two-cell NiMH pack format, the same connector orientation, and the same base-station charge circuit. One battery fits all three without modification.
• Bench tested on actual hardware: We cycled this pack through the base station charge circuit and confirmed the NiMH acceptance voltage triggered correctly. The protection circuit allowed full charge current from cycle one with no error flags on the base unit.
• First-charge protocol for NiMH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells in cordless phones reach rated capacity only after a slow initial charge — skipping this step leaves usable capacity well below 300mAh for the first few uses.

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

Essentiel B base stations sample battery voltage before allowing charge current through. A new NiMH pack that has been in storage can drop below 2.0V, which sits under the base's acceptance threshold. The base reads this as a fault rather than a dischargeable cell. To recover it, hold the battery contacts against a compatible NiMH charger at a trickle rate (around 30mAh) for 20–30 minutes until pack voltage rises above 2.2V, then return the handset to the base — the charge indicator should activate normally.

Range drops mid-call after swapping to a new battery

DECT handsets draw a short burst of current each time the radio transmits. If the NiMH pack hasn't completed its conditioning cycles, internal resistance is still elevated and voltage sags under that RF load. The handset's transmit power drops as a result, cutting effective range before the battery is actually flat. Run three to five full charge-and-use cycles through the base station and the internal resistance falls — after that, the pack sustains transmit voltage and range returns to normal.