Targerthobby 3 IN1 50W Discharger Voltage Tester Balancer For Lipo Battery Compatible with Li-Po/Li-Fe 2~6 cell battery or Receiver Battery 3 in 1 Measure battery voltage, balance cell voltage in battery pack & discharge functions Supports battery pack with JST / RX connector Caution: In the working condition, the heat of the bulbs will be very high. The heat can melt the plastic material instantly. Don't touch it with your hand and put bulbs on a plastic table !