1-8S LiPo Battery Voltage Tester with Buzzer Alarm

This compact and reliable voltage tester is designed for checking the status of 1 to 8-cell lithium polymer (LiPo) batteries. It automatically detects and displays the voltage of each individual cell as well as the total battery voltage, making it ideal for RC hobbyists, drone users, and battery maintenance.

The device supports reverse polarity protection to prevent damage from incorrect connections. A built-in buzzer alarm alerts the user when any cell voltage drops below the preset threshold. The default low-voltage warning is set to 3.3V per cell, but this value can be customized via a push-button for flexibility in different usage scenarios.

Key Features:

• Supports 1S to 8S LiPo battery voltage detection
• Displays individual cell voltage and total pack voltage
• High precision voltage detection: ±0.01V
• Built-in buzzer alarm for low voltage warnings
• Bright red LED indicator for alarm state
• Customizable voltage alarm threshold (2.7V–3.8V)
• Compact and lightweight design
• Reverse polarity protection for safe usage

Specifications:

• Voltage Detection Range (Per Cell): 0.5V – 4.5V
• Total Voltage Detection Range: 0.5V – 36V
• 1S Mode Voltage Range: 3.7V – 30V
• Low Voltage Alarm Active for: 2S – 8S
• Alarm Voltage Range: 2.7V – 3.8V (adjustable)
• Dimensions: 40mm x 25mm x 11mm
• Weight: 9g

Whether you're flying drones or managing your RC car batteries, this tool is an essential addition to your LiPo toolkit—helping you monitor battery health and avoid deep discharge that can damage your cells.