4 pin 6 hole 6 pin 4 hole black connector 

Voltage: 36 VCapacity: 27 AhWorking current: 1000 mAMaximum pulse: 3000 mAExternal diameter: Φ37mmWorking temperature : 0 ℃ ~ 150 ℃

  Voltage: 14.4 VCapacity: 11 AhOuter diameter: φ38.3 mm Total length: 369 mmWorking current: 300 mAWorking temperature : 0 ℃ ~ 150 ℃  

Voltage: 18VCapacity: 28 AhExternal diameter: φ 38.3 mm Total length: 785 mmSlot width of FRB pipe : 12 mm