SMAKN 5V Lithium Battery Charging TP4056 Board 5 Volt Mini USB 1A Charger Module DIY
Module: Linear chargingCurrent: 1A (Adjustable)Charge precision: 1.5%Input voltage: 4.5V-5.5VFull charge voltage: 4.2VLEDs: red - charging | green - chargedInput interface: mini USB and Solder platesWork temperature: -10oC to 85oCInversed polarity: NOSmall Size: 27mm x 19mm x 5mm(LED Colors may vary)An ampere meter can only be connected to 5v input end of the module. When charging it is better that the charging current is 37% of the battery capacity. So if you charge to the battery of 1000mAH, current of 400 is enough. Make sure you use a proper gauge wire for the current being used. Too thin and it will burn, too thick and the circuit may not act correctly. Make sure the connections at the contract points are good. If the input voltage is too high, like 5.2v, the current will be less than 1A, it is a normal protection function. NO Reverse polarity, connecting the battery the wrong way will fry the chip.The current can be altered (lowered) by changing the resistor connected to pin 2 of the IC (at the bottom middle of the board in relation to the direction of the text). In the configuration the module ships with the current is 1A. Changing out the surface mount resistor with a higher resistance will lower the current. The chart below will give you estimates of someresistor to current values:Ohms - mA30K - 5020K - 7010K - 1305K - 2504K - 3003K - 4002K - 5801.66K - 6901.5K - 7801.33K - 9001.2K - 1000We have been told by users that this board will work with most USB ports. You will most likely not see the consistent charging results you would get from a power supply. A USB Port will on