The GT Power Libra-Meter has three functions: Watt-Meter, Battery Checker and Cell Balancer. These functions are essential for electric flyers to ensure safe battery   conditions and measure the electric consumptions of the power system.

Libra-meter can handle all types of Lithium batteries (Lipo, Lilo, LiFe), but the battery pack has to have a balancing plug for checking voltage.

• Watt Meter - Measure the electric current up to 100A. You can verify the electric consumptions of your power system.
• Battery Checker - Show you the voltage of each cell in your battery pack.
  
• Cell Balancer - Balance the voltage of each cell in your battery pack. When you connect the battery   pack's balance port, balancing will start automatically. The voltage of each cell will be equalized to the lowest cell in the battery pack.

Specifications:

• Input power: Max 60V (both on watt-meter and battery checker)
• Max current: 100A (watt-meter)
• Min operating voltage: 6.6V
• Current consumption: 20mA at battery checker program
• Dimension: 105 x 53 x 20 mm
  
• Weight: 120g