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MPI Onboard Switch Harness Heavy Duty 3-LED Voltage Monitor for 7.4 V LiPo/Li-ion cells w/JR/Spektrum/Universal conn.
Giant scale size switch. Soft mount and built in charge jack. Onboard battery checker for for 7.4 V LiPo/Li-ion cells ONLY. 3-LED on-board battery checker with three LEDs - green, yellow, & red - monitor the status of Rx pack under actual load.
 "MPI Onboard Switch Harness Heavy Duty 3-LED Voltage Monitor for 7.4 V LiPo/Li-ion cells w/JR/Spektrum/Universal conn.")