Three In One 5A UBEC 3.5v or 3.7v
5A UBEC-power display--low voltage alarminput:3s/4s/6s lipolyUBEC output: 5V or 6V 5A MAX 7.5Alower voltage alarm: 3.5v or 3.7v/cell lipoAlarm LED: 0.2W on the board & 1W plugseven segment LED display power.