Lipo Battery Voltage Tester Key benefits Realtime monitoring of LiPo battery packs from 1S to 8S, helping you prevent damage from undervoltage or overdischarge. Automatic reverseconnection protection to safeguard your packs and the tester. RC low voltage buzzer alarm and low voltage alarm mode for 28S to alert you before a problem occurs. Convenient battery health check with a single unit that serves as a battery monitor and tester. Compatibility and protection Compatible with 18S Lipo, Liion, LiMn, and LiFe chemistries. Automatic protection against reverse connection. Designed to protect the battery from overcharging or overdischarging while in use. Display and readouts LED voltage display clearly shows: Individual cell voltages Total pack voltage Lowest cell voltage Remaining battery capacity Low voltage alarm status Practical features Low Voltage Alarm Mode for 28S to provide timely alerts during operation. RC Low Voltage Buzzer Alarm to notify you during RC activities. Battery monitor checker tester to assess pack health and readiness. Use scenarios RC quadcopters or airplanes: monitor cell balance and voltage in real time during flight to prevent cell failure. RC cars, boats, or other hobby electronics: verify pack health before and after sessions to maintain performance and safety. General LiPo maintenance: quickly check 18S packs for total voltage, individual cell balance, and remaining capacity to plan charging or replacement. How it works Connect the tester to a 18S battery pack. Read the LED display to view all cell voltages, total voltage, and the lowest cell voltage. If a cell drops too low, the low voltage alarm sounds to prompt action. The device automatically protects against reverse connections and helps prevent overcharging or overdischarging. Notes The product supports 18S packs across LiPo, Liion, LiMn, and LiFe chemistries. It functions as a voltage tester, battery monitor, and alarm system to support safe battery operation.