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U4

Microcomputer IC controls charging process: CC/CV/Trickle charging, to make sure the battery is full charged and won’t be over charged; each slot controls independently. Mixed charging mode.

Product Features

Micro USB & TYPE-C input

Support QC fast charge input, more efficient and fast input method

Microcomputer IC controls charging process: CC/CV/Trickle charging, to make sure the battery is full charged and won’t be over charged; each slot controls independently. Mixed charging mode.

Each slot corresponds to LED for instant visual display of charging status

 

Applicable batteries

Compatibility: various kinds of cylindrical chargeable batteries (Diameter: below 26mm, height: 34-75mm) 

Charge Li-ion and Ni-MH batteries.

Adopt Negative voltage control technology to improve charge efficiency.( four LED twinkling at the same time)

Constant current, constant voltage charging mode.

Constant current constant voltage charging, protect opposite connection and short circuit; 0 Voltage alarms.

USB 5V/2A output, power bank

Control USB LED and USB Fan

 

4.Electric Features

4.1 Input Features

Micro USB :5V 2A

TYPE-C:5V/2A   9V/2A  12V/1.5A

 

4.2 Output Features

Li-ion: DC 4.2V

Normal mode: 05A*4 1.0A*2 2.0A*1  In the third or fourth slot

Fast charge mode:  0.75A*4 1.5A*2 3.0A*1  in the third or fourth slot

Ni-MH: DC 1.53V  1A*4 

USB output 5V 2A(MAX)

External USB: 5V/500mA

 

4.3 Charging Instruction Mode

1.When there is no power input: the charger has no display;

2. When there is power input: all the LEDs flash red and green and flash green once.

3. when the battery is placed: the charger automatically recognizes the lithium battery, nickel-hydrogen and then enters the charging state, the corresponding indicator light is red, in the fast charge mode, red light is shown as breathing light

4. After the battery is full: the indicator light corresponding to the slot is bright green

 

4.4 Charging Control Mode

Nickel hydrogen/nickel cadmium

1.Current Control: Pulse Constant Current

2.Maximum voltage: 1.53V

lithium battery

Current control: constant current and constant voltage

 

5.Reliability Test

 

5.1 High Temperature Test

Test temperature: 45℃ ±5℃, last time:5 hours (no package)

Retest the appearance, insulation strength, indicating functions and charging features after putting in normal temperature. There are no scratches and other damages; there is no rust in outside metal. It is normal in indicator and electricity functions.

 

5.2 Low Temperature Test

Test temperature:  -10℃ ±3℃, last time:8 hours (no package)

Retest the appearance, insulation strength, indicating functions and charging features after putting in normal temperature. There are no scratches and other damages; there is no rust in outside metal. It is normal in indicator and electricity functions.

 

5.3 Constant Voltage Thermal-Humidity Test

Test temperature: 25℃ ±2℃ Humidity: 90%~95% last time:8 hours (no package)

Retest the appearance, insulation strength, indicating functions and charging features after putting in normal temperature. There are no scratches and other damages; there is no rust in outside metal. It is normal in indicator and electricity functions.

 

5.4 Vibrating Test

Frequency: 10~55Hz Amplitude: 0.35mm Circulation times in each direction: 10 times

Retest the appearance, insulation strength, indicating functions and charging features after putting in normal temperature. There are no scratches and other damages; there is no rust in outside metal. It is normal in indicator and electricity functions.

 

5.5 Falling Test

Height: 1000mm test-bed thickness: 20mm (hard wood) six side: once per direction

Retest the appearance, insulation strength, indicating functions and charging features after putting in normal temperature. There are no scratches and other damages; there is no rust in outside metal. It is normal in indicator and electricity functions.

 

6.Appearance Features

 

6.1 Size

Charger: (L*W*H)

6.2 Weight

Charger: 

6.3 Appearance

No scratch, blot, burrs, fissure and rust

 

7. Actual Charging Description

7.1 Plug one end of the power cord into the battery charger and the other end into the adapter and the charger will start working.

7.2 Charging 1 to 4 Li-ion battery

 

8. Packaging & Storing

8.1 Packaging

A. Plastic bag or bubble bag

B. Neutral box

 

8.2 Storing

A. Under the environment temperature during 0℃-40℃;

B. Clean, dry and ventilating indoor;

C. Avoid contacting with corrosive material.

D. Stay away from fire and heat source

 

9.Using Tips

9.1 Warnings

A.This product charges only for Ni-MH/ Ni-CD battery or Li-ion battery. If charging other batteries maybe lead to explode, break the batteries or weep and make personal injury and property loss.

B.Using charger in the wrong way maybe gets an electric shock.

C.Use the battery indoor and do not in the rain or snow.

D.Do not break or assemble the charger.

 

9.2 The Do's and Don'ts

A.Do not put heavy stuff in the charger.

B.Children should be supervised by adults during using the charger.

C.Use the charger in the temperature of 0℃-35℃

D.Do not use or store the charger under the direct sunlight, nearby the heated equipment and other high temperature places.

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