These are three ElectriFly 2S Adapters for FlightPower and Thunder Power LiPo Batteries Wired for Balancing.
Allows Charging or Discharging of FlightPower and Thunder Power
brand LiPos up to 3 amps through the Electrifly Equinox LiPo
Cell Balancer
Three ElectriFly 2S Adapters
Connecting between Equinox Cell Balancer and battery
Compatible Input: Equinox LiPo Cell Balancer (GPMM3160)
Compatible Batteries: FlightPower and Thunder Power LiPo batteries
Voltage Range: 2S, 3S, 4S and 5S (7.4V, 11.1V, 14.8V, 18.5V)