-Cargador de baterias de litio (Li-ion)Description:2-Cell(2S) 8.4V Version:Input voltage: DC 3-6V(Recommend DC 3.7V 5V)Input current: 1A(1A Version) 2A(2A Version) 4A(4A Version)Charging voltage: 8.4VCharging current: 0.55A (1A Version) 1.1A (2A Version) 2.2A (4A Version)3-Cell(3S) 12.6V Version:Input voltage: DC 3-6V (Recommend DC 3.7V 5V)Input current: 1A(1A Version) 2A (2A Version) 4A (4A Version)Charging voltage: 12.6VCharging current: 0.37A (1A Version) 0.74A (2A Version) 1.48A (4A Version)4-Cell(4S) 16.8V Version:Input voltage: DC 3-6V (Recommend DC 3.7V 5V)Input current: 1A (1A Version) 2A (2A Version) 4A (4A Version)Charging voltage: 16.8VCharging current: 0.28A (1A Version) 0.56A (2A Version) 1.12A (4A Version)Switching Frequency up to 1MHzQuasi-CV mode to Compensate for the Voltage Loss on Battery Internal Resistance and Trace ResistanceAutomatic RechargeProtection for Battery Voltage Being Low than Input and Short BatteryGood adaptability to Input Supply with Limited Driving CapabilityBattery Overvoltage ProtectionLed indicator: "CR" LED is charge status indicator"OK" LED is fully charged OR Constant voltage modeSize 39mm x 18mm x 6.3mmWeight: 5g