ماژول شارژر و دشارژر باتری لیتیومی دارای دو خروجی 5V USB

This module is used for charging of single lithium battery or multiple lithium batteries in parallel, and the charging port can take power from the USB port.

The Li-ion charger is a voltage-limiting device that has similarities to the lead-acid system. The differences with Li-ion lie in a higher voltage per cell, tighter voltage tolerances and the absence of trickle or float charge at full charge. While lead-acid offers some flexibility in terms of voltage cut off, manufacturers of Li-ion cells are very strict on the correct setting because Li-ion cannot accept overcharge. The so-called miracle charger that promises to prolong battery life and gain extra capacity with pulses and other gimmicks does not exist. Li-ion is a “clean” system and only takes what it can absorb.

The full charge occurs when the battery reaches the voltage threshold and the current drops to 3 percent of the rated current. A battery is also considered fully charged if the current levels off and cannot go down further. Elevated self-discharge might be the cause of this condition.

The charge process can be intermittent, and Li-ion does not need saturation as is the case with lead-acid. This offers a major advantage for renewable energy storage such as a solar panel and wind turbine, which cannot always fully charge the battery. The absence of a trickle charge further simplifies the charger. Equalizing charge, as is required with lead-acid, is not necessary with Li-ion.

1. Charging part:

 1.1 Input voltage5V / 1000mA

 1.2 Constant current When the battery voltage is ≥ 3.1V: 1000mA ± 100mA

 1.3 Constant pressure 4.20V ± 1%

 1.4 Saturation conditions Voltage ≥ 4.15V and current ≤ 100mA

2.LED light display part:

 2.1 On the internal charge power display

(A total of 4 lights)

Voltage ≥ 3.10V LED: D1-D2-D3-D4 flash

Voltage ≥ 3.60V LED: D1 light .D2-D3-D4 flash

Voltage ≥ 3.8V LED: D1-D2 bright .D3-D4 flash

Voltage ≥ 3.95V LED; D1-D2-D3 bright .D4 flash

Voltage ≥ 4.15V LED; D1-D2-D3-D4 light

2.2 Not Charged Click the button to view the power voltage < 3.0VLED: D1 off (output off)

Voltage ≥ 3.1VLED: D1 light

Voltage ≥ 3.70V LED: D1-D2 bright

Voltage ≥ 3.77V LED: D1-D2-D3 bright

Voltage ≥ 3.92VLED: D1-D2-D3-D4 light

2.3 External discharge power display Voltage < 3.0VLED: D1 off (output off)

Voltage ≥ 3.1VLED: D1 flash

Voltage ≥ 3.70V LED: D1 light .D2 flash

Voltage ≥ 3.77V LED: D1-D2 bright .D3 flash

Voltage ≥ 3.92VLED: D1-D2-D3 light .D4 flash

3. Discharge part:

 3.1 Output voltage 5.0V-5.3V

 3.2 Load output current USB2.0 volume standard female base output 1.0A and 2.1A.

 3.3 Average Discharge efficiency ≥80%

 3.4 Short circuit protection Output short circuit automatically turns off the output and shutdown, short circuit after the release of charge can be activated.

 3.6 5V output connectorUSB2.0 standard female output.

4. White light part:

4.1 No

5. Key section:

5.1 Sleep mode, press the button to display the current power, 15S after the closure of the LED, a load is a boost, no-load 30S automatically shut down into sleep mode.

6. Battery protection board:

 6.1. Overcharge protection voltage 5.0V-5.3V

 6.2. Over-discharge protection voltage 2.5V ± 50mV

7. Side charge side part:

 7.1 Does not support edge loading

8. Other:

8.1 Machine static power consumption ≤ 100uA

8.2 Shutdown voltage ≤3.0V

8.3 Starting voltage > 3.3V (charge the second light flashes before external discharge)

8.4 Input interface MICRO female seat

9. Aging Test:

1. Assembled semi-finished products, with 20W / 5R resistive load, will be put (1A load).

2. Will be finished the semi-finished products, with a 5V / 1A charger to charge it, observe the status of the display and whether the same OK.

3. Will be fully charged semi-finished products, with 20W / 5R resistor load on its discharge, observe the status and specifications are consistent OK, the test is completed.

4. Will be finished semi-finished products, with a 5V / 1A charger to charge, to reach 70% stop charging, can be assembled products.

5. Assembled after the finished product, with 20W / 5R resistive load and 5V / 1A charger to do charge and discharge testing to prevent damage during assembly.