About this replacement
Eartec HUB / UltraLITE Series — 3.7V Li-ion Replacement Battery (LX600LI)
This is a 3.7V, 810mAh Li-ion replacement for the Eartec LX600LI cell. It fits the HUB and UltraLITE wireless intercom headsets used in live events, broadcast, and sports production. When the original cell degrades, this restores the headset to full operating condition.
- HUB and UltraLITE compatibility: Both platforms share the same 3.7V single-cell architecture, the LX600LI connector footprint, and the same BMS handshake sequence with the base station. One cell fits both.
- Bench tested on actual hardware: We cycled this cell through the HUB base station charge circuit and monitored BMS communication. The protection board responded correctly to charge termination and discharged within spec under combined DECT radio and audio load.
- First-cycle base station protocol: Seat the headset in the base and let it complete a full uninterrupted charge before the first call. The HUB base needs to log the new cell's BMS data before the charge indicator reflects actual capacity accurately.
Why the HUB headset cuts out mid-transmission on a fresh battery
The HUB draws current simultaneously from the audio circuit and the DECT radio module. On a new or recently stored cell, that combined load can pull the terminal voltage below the BMS cutoff threshold momentarily, triggering a protection disconnect. This is not a faulty battery — it is the cell operating at storage voltage rather than a conditioned charge state. Running three to five full charge and discharge cycles through the base station brings the cell to its rated 810mAh delivery and stabilises voltage under that combined draw.
Base station shows full charge but headset shuts off after brief use
This happens when the cell arrives at storage voltage — typically around 3.6–3.7V — and the base station interprets that as a near-full charge, ending the cycle early. The cell has not been charged to its actual capacity ceiling. Place the headset back in the base, allow a complete charge cycle without interruption, and confirm the charge LED completes its full sequence. After one proper full cycle, the base station charge estimate and the headset's actual run state will align.