S4 output current S4 detect battery type and allocate current automatically. No manual operation needed.For Li-ion batteries: Charging 3~ 4 cells, each gets 0.5ACharging 2 cells, each gets 1.0ACharging 1 cell on the "2A" slot, it gets 2A. Charging 1 cell on any "non 2A slot", it gets 1AFor Ni-mh / Ni-cd batteries : 0.5a / battery. Battery QTY doesn't matter Specifications: Control: DV Detection ODV Detection Total Time Control Highest Voltage Detection Idling Output Voltage: 5V Input current: Li-ion 2000MA*1 1000MA*2 500MA*3 500MA*4; Ni-mh Ni-cd 1.2V 500MA*1 500MA*2 500MA*3 500MA*4 Screen Display and Operation:Connecting to power supply, without batteries, the screen will be bright for 2 seconds then display "null" which denotes no batteries being loadedCharging Status and Screen Display: loading batteries, the screen will display channel / battery type / battery voltage / charging current / capacity rate. "%" flashes mean the device is charging, "%" increases until 100% which means batteries are fully charged, S4 cease charging the battery.The upper and lower part of the button controls Channel 1,2,3,4 respectively. A soft tap can show you related information including voltage /capacity /time.Button Operation: short click, LCD displays charging status. 4-second long click keeps the LCD always bright.Protection mode:Short Circuit Protection;Over-Current Protection;Reverse Connection Protection
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