HME RF6000B 6000 I.Q Wireless Headset Replacement Battery 3.7V 950mAh

HME 6000 I.Q Series — 3.7V Li-ion Replacement Battery (RF6000B)

The RF6000B is a 3.7V, 950mAh Li-ion cell for the HME 6000 I.Q wireless headset and related models including the Blue, RFT, and Wireless IQ variants. It replaces the original cell when talk time degrades or the headset stops holding a charge. Capacity figures come from the product data — 950mAh / 3.52Wh.

• 6000 I.Q platform compatibility: The 6000 I.Q, Blue, RFT, and Wireless IQ headsets share the same battery bay dimensions, voltage rail, and BMS handshake protocol. Swapping cells across these models works because the base station communicates charge status to the same cell specification in all variants.
• Bench tested on actual hardware: We cycled this cell through the base station charge dock and monitored the BMS handshake at each stage. The protection circuit tripped correctly at low-voltage cutoff and the base registered a full charge state without errors after the first complete cycle.
• First cycle in the base station: Place the headset in the base dock and let it complete a full uninterrupted charge before the first call. DECT headsets log the new cell during that cycle — skipping it causes the talk-time indicator to read inaccurately until the base and cell have synced.

Base station showing a charging error after fitting a new RF6000B

The HME base station reads the battery's BMS before displaying a charge state. A new cell ships at storage voltage — typically around 3.6V — which sits below the threshold the base expects to see at dock insertion. The base interprets this as a fault rather than a low cell. Seat the headset firmly in the dock, leave it undisturbed for at least 15 minutes, and the BMS will complete its handshake. The error clears once the cell climbs above 3.7V.

Headset cutting out mid-call even with a recently charged battery

The 6000 I.Q draws from two loads simultaneously — the DECT radio and the audio circuit. Under combined draw, a cell that reads full at rest can sag below the BMS cutoff threshold mid-transmission. This is more common in the first few cycles before the cell has reached its rated capacity. Run three to five full charge-discharge cycles through normal use and the voltage sag reduces as the cell conditions. If cutouts persist past five cycles, check the dock contacts for oxidation and clean them with a dry cloth before replacing the cell again.