3.1A boost output 3A battery terminal charging super small and super energy

Carefully designed small and full Type-C+USB dual port design is practical and easy to use Selected good materials are small and strong to ensure limited heat dissipation volume 3.1A, fast and stable output.

1. 3.1A synchronous boost conversion output

2. 3A battery terminal synchronization switch charging

3. Support filling while placing

4. Boost efficiency up to 93%

5. 4 LED power display

6. Automatically detect phone insertion and removal

7. Double click the key to close the output, and click to open the output

8. TYPE-C supports single port input and output

9. Mobile phone charging current intelligent recognition DCP

10. Intelligent load identification automatic standby

11. Output overcurrent, overvoltage and short circuit protection

12. Input overvoltage, overcharge, overdischarge and overcurrent discharge protection

Length, width and height of single C model: 26*19*4.9mm (excluding the protruding part of USB port)

Length, width and height of C+ U model: 26*19*12mm (the model with USB includes USB height)

INSTRUCTION

1. Before connecting the battery, connect the charging head of the mobile phone through the type-c data cable, and check that the four lights turn on in turn to confirm that the module chip functions well.

2. Use a multimeter to measure the prepared battery voltage, and ensure that the battery voltage is between 3.0-4.2V. If the voltage is higher or lower than this range, the battery may fail or is not applicable to the battery type.

3. After ensuring that the battery is free of problems, do a good job of static protection, prepare thick wires for welding, pay attention to the positive and negative electrodes, and the reverse plate must be burned.

4. The charging input can be connected to the charging head through the type-c interface, or it can be connected to 5V through the interface marked in blue in the figure above.  The input current of port C should be greater than the input current of the welding interface (the input battery terminal of port C can be charged by 3A, and the maximum input battery terminal of the welding interface is 2A).

Tip: If you take a single C port package, the USB interface pad can't be wired out for direct use. If you want to connect to an external USB port or take power from the USB port pad, you can't use a single C port package. You can buy a C+U port package and remove the USB port for use. (The difference between C port and C+U port is not only that there are more USB interfaces, but also other components.)

Since only the C port outputs from the single C port, the C port of the board follows the relevant interface protocols. When it is not detected that the electrical equipment is plugged in, the voltage will not be output. The output must be to pull down the CC line level through the load (mobile phones and other devices supporting the C port), telling the module that the access device is an electrical equipment, not a charging power supply (the module mainly detects the CC line level when judging whether the C port is to be discharged or charged, and can open the output by pulling down a 5.1k resistor through the CC line), You cannot force output by pressing a key or other methods, because there is only one output from a single C port. When the load is not connected , the key output conflicts with the C port protocol, the key forced output conflicts with the C port protocol, the key function is shielded, and the key forced output light only flashes once. After the load is connected, the key function is restored.

Note

Batteries can only be connected in parallel (the number of parallel connections is unlimited), not in series. If they are connected in series, the motherboard will burn.

The wires connected to the external battery of the motherboard should be able to pass the current of more than 6A. At 0.9 square meters of copper wire should be used, and 1.5 square meters of ordinary wires should be used. It is not necessary to be too thick, but it should not be too thin. Too thin will cause potential safety hazards. (Because the battery terminal current is very high)

The motherboard has its own protection chip, so there is no need to add a protection board for the battery. Unless your protection board can pass a current of more than 6A, please remove the protection board if there is one, and connect the battery cell directly to our motherboard. (Because the built-in device can not normally have excessive current, it will be protected if the output power is large)

Partners who use alligator clip motherboard for testing should not charge their mobile phones, and do not ask why. In short, they should not use this way. The mobile phone that needs recharging must be soldered and soldered (many buyers are disobedient, --if there are problems, why is my motherboard broken, why can't the motherboard be recharged quickly, how can the motherboard be powered off and restarted, etc., please operate according to the requirements and don't be complacent.)

3.7V/4.2V 18650/polymer/ternary lithium battery is used as the battery. Multiple 18650s can be connected in parallel for large monomer, but iron lithium battery, disposable dry battery, nickel hydrogen battery, lead acid battery, nickel pick battery, etc. cannot be used. The battery cannot be connected in series.

All power supplies will generate heat, which is an electronic common sense. All products are the same. If they do not generate heat. the current will not be limited to 2.4A. It is not very good to make 10A and 100A ? The cost and size of the board are here. This module uses mainstream chips from large manufacturers with good efficiency and performance.

The maximum charging current 3A refers to the charging current of the battery terminal, not the input current. Since the battery voltage is different from the input voltage, the input voltage is greater than the battery voltage, so the 5V input current is less than the battery terminal current, so the value of 3A is no doubt. It is OK to make the chip hardware for 4A. The limit of 3A is to be compatible with most mobile phone charging heads. After all, many charging heads are of ordinary power.

3.1A discharge current refers to the maximum current. It does not mean that the discharge must be 3.1A. It is not a constant current source. The actual current is as much as the load actually uses. For example, if you buy a car and the target speed is 260km/h, can you say that the car's power is virtual when you drive at most 120? From another angle, the car doesn't require you to drive at a speed of 260. People who can't understand or understand.