About this replacement
Conversor Pro Transmitter / Pro Receiver — 3.7V Li-Polymer Replacement Battery (GEB852528P)
This is a 3.7V 400mAh Li-Polymer replacement battery for the Conversor Pro Transmitter and Pro Receiver wireless headset system. It replaces OEM part numbers GEB852528P and CNPROV1BAT. When the original cell loses capacity or fails entirely, this pack restores cordless audio transmission.
- Pro Transmitter and Pro Receiver compatibility: Both units run from the same 3.7V cell with matching connector pinout and BMS handshake. The transmitter and receiver share this pack across the platform, so one part number covers both sides of the system.
- Bench tested on actual hardware: We cycled this cell through the Conversor base station and confirmed the BMS completed a full charge handshake without error. Discharge curves held steady across the combined DECT radio and audio draw typical of this transmitter.
- First-cycle base station logging: Seat the transmitter in the base and run a full charge cycle before making any calls. The base station uses that first cycle to log the new cell — until it does, talk-time estimates on the indicator will read low or erratically.
Base station showing charging error after fitting a new pack
The Conversor base station checks for a BMS handshake before it accepts a new cell. If the pack ships at storage voltage — typically around 3.6V — the base may flag a fault rather than begin charging. Remove the transmitter, reseat it firmly, and leave it on the cradle undisturbed for at least 15 minutes. Once the base reads a stable voltage from the cell, the handshake completes and normal charging resumes.
Transmitter cuts out mid-call on a recently charged battery
The Conversor Pro Transmitter draws from both the DECT radio and the audio circuit simultaneously. Under that combined load, a cell that has not completed its first full conditioning cycle can sag below the BMS cutoff threshold briefly, dropping the transmission. This is not a faulty pack — it resolves over three to five full charge-discharge cycles as the Li-Polymer cell reaches rated capacity. Run the transmitter to near-flat and recharge fully on the base station to accelerate conditioning.