Radiomaster ERS-CV01 Cell Voltage

About this product

The RadioMaster ERS-CV01 Cell Voltage Sensor is a compact, plug-and-play telemetry module for use with compatible ExpressLRS receivers. Just connect the sensor to your battery’s balance port, and it will monitor the real-time voltage of each cell, transmit the data via the ExpressLRS receiver, and display it directly on your EdgeTX radio.

VIDEO: RadioMaster ERS Series Sensor | Telemetry Module for Compatible ExpressLRS PWM Receivers

Features

• Captures real-time individual cell voltages for improved battery safety and performance
• Easily connects to the battery’s balance port for accurate cell-level voltage readings
• Supports daisy-chain expansion for additional ERS telemetry sensors as your setup grows
• Seamless ExpressLRS integration
• Compact & Lightweight

Cell Voltage Display, Configuration & Logging

The ERS-CV01 Cell Voltage Sensor requires both the CellsValues LUA and the RadioMaster Sensor Configurator LUA to function correctly. Together, these LUAs enable per-cell voltage display, sensor configuration, and telemetry logging for post-flight review on EdgeTX radios.

Specifications

• Item: ERS-CV01 Cell Voltage Sensor
• Operating voltage (serial port): 5–8.4V
• Operating current (serial): 8mA
• Balance port current (8S): 2mA
• Supported cells: 2–8S
• Battery types: LiPo, LiHV, LiFe, LiIon
• Voltage accuracy: ±0.01V
• Temperature range: –10 ℃ to +85 ℃
• Size: 43.5 × 25 × 7mm
• Weight: 6.5g

Links

• ERS-CV01 User Manual
• Download the CellsValues LUA
• Download the RadioMaster ERS Sensors Configurator.lua

Includes

• 1x ERS-CV01 Cell Voltage Sensor
• 3x Heat-Shrinkable Tube
• 1x Manual QR Code Card