Comidox 20PCS 18650 TP4056 Lithium Battery Charging Board Micro USB Charger Module 5V 1A with Overcharge Over-Discharge Protection

Specifications: Input Voltage: 4.5~5.5V Full charging voltage: 4.2V Max output current:1A Input interface: Micro interface Item Size: 25mm*19mm(1mm=0.0393inch) Note: The current meter for the test current can only be connected in series to the 5V input of the charging board. The charging current is preferably 0.37 C of the battery capacity, which is 0.37 times the capacity. For example, a battery charging current of 1000 mAH is sufficient. If the charging speed is too high, the effect will be poor. If the battery voltage is over, it will be more! The charging connection wire should not be too thin or too long. This connection has a large resistance. If it is too thin, it will be more than the battery voltage. It is best to have good contact with the battery. Otherwise, the battery voltage will be washed off. If the input voltage of 5V is too high, such as 5.2 or even 5.5, it will cause the charging current to be less than 1000mA, which is normal. When the voltage is high, the chip will automatically reduce the charging current, and the chip will not burn out. It is normal for the chip to heat up at around 60 degrees during operation. After all, the charging current is large. Input reverse connection has no effect on the chip, but the output (battery end) will reverse the chip, please pay attention to the buyer. Current regulation: RPROG(k)=30, IBAT(mA)=50 RPROG(k)=20, IBAT(mA)=70 RPROG(k)=10, IBAT(mA)=130 RPROG(k)=5, IBAT(mA)=250 RPROG(k)=4, IBAT(mA)=300 RPROG(k)=3, IBAT(mA)=400 RPROG(k)=2, IBAT(mA)=580 RPROG(k)=1.66, IBAT(mA)=690 RPROG(k)=1.5, IBAT(mA)=780 RPROG(k)=1.33, IBAT(mA)=900 RPROG(k)=1.2, IBAT(mA)=1000 We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 20Pcs