5pcs 1A 2S Synchronous Buck Li-Ion Charger DC 5-23V to 4.2V 8.4V 12.6V Power Supply Module for 3.7V 7.4V 11.1V 18650 Lithium Battery

Description: 2-Cell(2S) 8.4V Version:Input voltage: DC 10-23V(Recommend DC 12V/14.8V/15V/18V)Charging voltage: 8.4VCharging current: 1A Led indicator:Bright: Charging Off: full blinking: almost full;