1, according to the capacity selection, the capacity of the charging treasure has many levels, we should choose the corresponding capacity of the charging treasure according to their own use, if it is only a short life in the work, choose thousands of MA can be. However, if the purpose of purchasing a charging bank is to use it for long-distance travel, taking into account the battery life, we should choose a large-capacity charging bank, such as 20,000 MA is very suitable.
2, the selection of mobile power depends on the capacity, look at the battery, look at the agreement, look at the brand, look at the appearance, look at the channel and so on. Depending on the capacityThe nameplate of the charging bank is marked with two data, battery capacity and rated capacity, the battery capacity data is greater than the rated capacity, and the battery energy is generally 53 to 67 times the rated capacity. The battery capacity determines how much power the charging bank can store, and the larger the battery capacity, the more power the charging bank can store.
3, the capacity size to meet the visual feeling, followed by its capacity. In general, a large-capacity charging bank, its volume and weight will also increase, will be heavier. If you do not have a high demand for mobile power capacity, you can choose a small capacity to avoid holding too muchHeavy is not too convenient.
4, information first need some product name, model, rated capacity, battery capacity and other information are complete charging treasure, the final is the charging treasure factory name or trademark must have. Ordinary lithium cells and polymer cells, the preferred polymer cells, polymer cells, lighter, non-explosive, ordinary lithium cells are very heavy, and may explode.
5, first of all, if we choose a charging treasure, we generally choose a large capacity, generally 20,000 MA, and we have to choose a little smaller and lighter, so that it is easy to carry.
6>
The basic principle of wireless charging is to convert the current into a magnetic field, which is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
Wireless charging, also known as inductive charging, non-contact inductive charging, from wireless power transmission technology, is the use of near-field induction, that is, inductive coupling, by the power supply equipment (charger) to transmit energyIt is sent to an electric device, which uses the received energy to charge the battery and at the same time for its own operation.Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
Generally seen wireless charging, the use of the "current magnetic effect" and "electromagnetic induction" principle. In 1819,Danish scientist Elster observed that if there is an electric current on a wire, a magnetic field will be generated around it, which can deflect the north finger. Later generations have further found that the wire is encircled into a ring, or even wound into a coil, and the magnetic field generated will be stronger and more concentrated, which is called the "current magnetic effect."
The principle of wireless charging technology is "magnetic electricity", simply put, through the charging device and the mobile phone device installed on the two "magnetic equipment" mutual induction and formation of current. At present, products supporting wireless charging have appeared in mobile phones, electric vehicles, smart furniture and other fields. Among them, in the mobile phone industry, to the "Qi standard"The most common, in the packaging of many mobile phones and wireless chargers often use Qi labels to mark.
The most intuitive way is to use a wireless charger to try to know, generally can be used normally. Compared with wired charging, the biggest convenience of wireless charging is that you can charge your phone without using a data cable.
Yes, the phone does not have a 5mm headphone jack, but it does have a charging portCan be used as a headphone jack.
The iPhone vibrates on, but there is no vibration, indicating that the vibrator is faulty or damaged, you need to disassemble the machine to check or replace the vibrator.