Polymer Lithium-ion Charger Type-C to 8.4V 12.6V 16.8V boost 18650 lithium battery

2S 8.4V version Input voltage: DC3-6V (recommended DC3.7V5V) Input current: 1A (1A version); 2A (version 2A); 4A (4A Edition) Charging voltage: 8.4V Charging current: 0.55A (1A version); 1.1A (Version 2A); 2.2A (Version 4A) 3S 12.6V Version: Input voltage: DC 3-6V (recommended DC 3.7V5V) Input current: 1A (1A version); 2A (version 2A); 4A (4A Edition) Charging voltage: 12.6V Charging current: 0.37A (1A version); 0.74A (Version 2A) 1.48A (Version 4A) 4S 16.8V Version: Input voltage: DC3-6V (recommended DC 3.7V5V) Input current: 1A (1A version); 2A (version 2A); 4A (4A version) charging voltage: 16.8V charging current: 0.28A (1A version); 0.56A (Version 2A) 1.12A (Version 4A) Switching frequency up to 1MHz Quasi-CV mode to compensate for voltage loss on battery internal resistance and trace resistance, auto-top-up battery voltage below input and battery short-circuit protection, good adaptability to input power with limited drive capacity, battery overvoltage protection LED indicator: “CR” LED is charge status indicator “OK” LED Fully charged or constant voltage mode: Operating ambient temperature -40°C to 85°C Weight: 5g Apply Notebook Ii-o lithium battery 18650 Mobile phone Solar charging Audio Equipment Portable devices ELECTRIC FAN, TYPE-C CHARGING EQUIPMENT, ETC