Eartec Comstar Com-Center 6V Replacement Battery CC-2200NI

Eartec Comstar Com-Center — 6V Ni-MH Replacement Battery (CC-2200NI)

This is a 6V 2000mAh Ni-MH replacement battery for the Eartec Comstar Com-Center and Comstar Com-Center Base Station wireless headset system. It slots into the base station or headset unit and restores the power the original cell provided before capacity loss set in. Voltage and chemistry match the OEM spec exactly — 6V Ni-MH, part number CC-2200NI.

• Comstar Com-Center compatibility: Both the headset unit and base station share this 6V Ni-MH cell because the DECT radio module and audio circuit run off the same voltage rail. The CC-2200NI connector and BMS handshake are matched to the Comstar platform specifically.
• Bench tested on actual hardware: We cycled this battery through charge and discharge on the Comstar base station. The BMS completed handshake on first dock, accepted a full charge without error flags, and held voltage within the expected range across the full discharge curve.
• First-cycle base station logging: Dock the headset and charge it fully in the base station before taking any calls. The Comstar base needs one complete charge cycle to log the new cell and begin reporting talk-time estimates accurately — skipping this produces misleading charge indicators from the first use.

Base station not recognising a new pack after installation

The Comstar base station uses a BMS handshake to verify the cell before showing a charge status. A freshly installed replacement often sits at storage voltage — typically 5.4–5.6V — which the base reads as an anomaly rather than a dischargeable cell. When this happens, the charge indicator may flash, show an error, or simply not progress. Place the unit on charge for a full uninterrupted cycle without removing it mid-way, and the base station will complete the handshake and register the new cell correctly.

Headset cutting out mid-call on what looks like a charged battery

The Comstar headset draws from the audio circuit and DECT radio simultaneously during active calls. Ni-MH cells that have partially degraded show near-normal resting voltage but sag sharply the moment combined load hits. The protection circuit reads that voltage dip as a low-battery cutoff and drops the connection before the indicator shows any warning. If cut-outs happen while the charge indicator still shows partial or full, test resting voltage with a multimeter — a healthy 6V Ni-MH cell should hold above 6.8V off load.