5V Lithium Battery Charging TP4056 Board 5 Volt Mini USB 1A Charger Module DIY

Board Details:

  Module: Linear charging
  Current: 1A (Adjustable)
  Charge precision: 1.5%
  Input voltage: 4.5V-5.5V
  Full charge voltage: 4.2V
  LEDs: red - charging | green - charged
  Input interface: mini USB and Solder plates
  Work temperature: -10ºC to 85ºC
  Inversed polarity: NO
  Small 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 some resistor to current values:

Ohms - mA
30K - 50
20K - 70
10K - 130
5K - 250
4K - 300
3K - 400
2K - 580
1.66K - 690
1.5K - 780
1.33K - 900
1.2K - 1000


We 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 only source 500mA max. It will be up to you to determine if your computer's USB port can handle the draw this board.