Description Welcome to our store:beestudio 2016 Tips: If you need Large quantity, please contact us, we can wholesales. 2in1 charge discharge board module for 1850 lithium battery DIY Power Phone Bank 5V 1A 2A Dual USB LCD all-in-one Boost Lithium ion Battery Charger Module Board 5V 2A Dual USB LCD all-in-one Boost Lithium ion Battery Charger Module USB Lithium Li-ion 18650 Battery Charger Module Board DC 3.7v 4.2V to 5V 1A Lithium ion battery 5V 2.1A USB all-in-one boost charge iPhone capacity LCD Version 1: (the 4.2v and 4.35v is charging cutoff voltage, you can choose the model according to your battery) Notes: The input voltage: 5V Maximum charging current: 2A or 1.8A Charge cut-off voltage: 4.2 V + / - 1% or 4.35v PCB Size: 13.1*20.2*3.5MM Version LI4001: Parameters are as follows: Size: 15.5*20.5*4.5mm Input power: 4.5-9V, not more than 9V. Cut-off voltage: 4.2V ± 1% Output current: 2A ± 5% Antihypertensive efficiency: more than 90% (input 5V, output 4V, 1.5A current measured) Tip: input output positive and negative at the back of the board have don't p solder it wrong, the board comes with red and green LED indicator, welding long foot pin square pad\. Advantage A, almost the whole process of constant current. If the charging current is set to 2A, the constant current charging will keep the 2A up to 4.10V. B, switch buck mode. The efficiency is higher than the linear charging circuit, and the heat is less than the same current linear charging plate, and the measured efficiency is slightly higher than the 5000. C, using high quality ceramic capacitors, integrated inductor, the performance is more reliable. D, the back of the board has been marked with the definition of input and output, to facilitate the control. Version LI4001 Micro USB: Small size of the charging board to facilitate the change micro charging equipment, the current in this size is relatively large ~ so please pay attention to the heat ~ Size: 10.5*23*6.8MM Charge cutoff voltage: 4.2V ± 1% Charging current 1.7-2.2A Input voltage: 4.5V-6.5V (based on input capacitance measurement) Charging instructions: red patch LED is located on the opposite side of USB micro, no battery flashes, charging long bright, full of quenching. Wiring Description: Input power for the standard USB micro interface, please confirm the power supply has 2A output capability.
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