18W fast charging, 20W fast charging, 45W fast charging, what does 18W refer to, and how much faster

Ordinary mobile phones use flash charging.

The charger will not hurt, but the fast charging method of the flash charger requires the hardware support of the mobile phone.

There are 2 charging methods for flash chargers, one is flash charging fast charging, and the other is ordinary charging.

If it is an ordinary mobile phone, it will be charged in the same way as normal charging. It basically has no effect on mobile phones.

However, it should be noted that it is not recommended to use a low-power charger to charge a compatible high-power mobile phone for a long time, for example, the mobile phone can be charged with 2A, but the charger only has 1A output, then the charger will run at full load for a long time and heat up.

Larger, it will increase the probability of burning out the charger for a long time, which is equivalent to a small horse-drawn cart and a tired pony, but the car will not have a problem.

There are also high-power chargers to charge low-power mobile phones, so you don't have to worry about this situation. For example, the charger can output 2A, but the charging current of the mobile phone is nominal 1A, then the charging will be limited to 1A current charging, and will not be charged at 2A, because the protection function of the mobile phone is limited (overcurrent protection).

refers to the output power when charging.

But this fast charging is not for any mobile phone can be used, in principle, the output power of the configured charger can not exceed the original power, otherwise it will shorten the instructions for the use of the mobile phone battery, and even cause heating and combustion in serious cases.

The charging power of the power bank is 18W and is the charging power, which is faster than the charging speed of 18W.

The voltage of the charger is generally 5V-1A, or, 1A=1000mA, the international standard unit of current is amperes, and the conversion of the unit of "milli" level to the standard unit is 1000 times. It means that the charger can output a stable DC voltage, and 1A and both refer to the output current.

In terms of output speed, it is twice as fast as 1a. 1a means that 1000 mAh can be charged per hour, and a general battery such as 1000mA can be fully charged in 1 hour. Under normal circumstances, the output of the power bank cannot be compared with the output of the charger, and it will be slightly slower.

Chargers (chargers) are divided into power frequency machines and high-frequency machines according to the working frequency of the designed circuit. The power frequency machine is designed based on the principle of traditional analog circuit, and the internal power components of the machine (such as transformers, inductors, capacitors, etc.) are larger, and there is generally less noise when running with a large load, but the model has strong resistance in harsh power grid environmental conditions, and its reliability and stability are stronger than that of high-frequency machines.

Hello, the appearance is different.

First of all, the appearance of these two chargers is not the same. The 30W is a split-lobe type, and it has two parts that are known to be detachable, which is the same as the charger of the iPad we usually use. The 18W is an all-in-one design, and the pins and charging head are connected together, which is larger than the ancestral 5V1A charging head.

2. **Different.

Secondly, the official price of the 30W charger is 340 yuan, and the 18W charger is 243 yuan.

3. The output parameters are different.

The 30W charger has four output parameters, which are 5V3A, 9V3A, 15V2A, and only two output specifications, which are 9V 2A and 5V 3A.

4. The output power is different.

The maximum power of the 30W charger can reach 30 watts, and the maximum power of the 18W is 18 watts.

5. The models are different.

The 30W model is the A1882, while the 18W model is the A1695, but this model is not the key.

Apple 30w or 18w which charges faster.

Theoretically, 30W is fast, but it depends on the phone model, because some Apple mobile phones support fast charging, while some do not support fast charging, such as iPhone7 and some previous models do not support fast charging, and there is basically no difference between 30W and 18W. If it supports fast charging, then the 30W one will be a little faster, but the fast time is relatively limited, and it may take about 20-30 minutes to fully charge.

Which is better to buy Apple 30w or 18w.

If you are charging a mobile phone, it is enough to buy 18w, because the charging speed of 18w for Apple mobile phones is very fast, of course, 30W is faster, but it will not be much faster than 18w, and it will be more expensive, so 18W is recommended for charging mobile phones. If you are charging a tablet or laptop, a 30W one is more recommended, but laptop charging usually requires a higher power one, and a 30W one may not be enough. The method used is basically a combination of pulse method and depolarization reaction, simply put, on the basis of pulse method.

When the upper half of a sine wave is complete, a cosine wave of transient negative voltage is inserted to counteract the huge amount of heat generated by the excessive current (polarization reaction) and thus control the battery heat. This method is generally only available in more professional chargers for reference only.

The voltage of the two of them should be 88 watts and 30 watts, and their chargers, the chargers are the same, but one current.

A: The charger power is different, the same mobile phone battery, the full time, the latter is shorter.

For chargers, the difference between them is that their charging current is different, 30 watts of charging current is greater than 18, a lot.

The power of their charger is not the same, and there must be a very big difference in general, and generally their power is not the same.

Hello, the two of them have different power and different output currents. The second one charges relatively quickly.

The difference between them is the difference in charging speed, and there will be no mobile phones that do not support 30 watts.

18 This article does not know and 30 this batch is not the difference between charging and chargers. I don't know, it's more accurate for you to check on the Internet yourself.

Generally pre-void 9v2a. Fast charging refers to a charging method that can make the battery reach or close to a fully charged state within 1 2 hours. It is commonly used for traction batteries when they need to return to a fully charged state in a short period of time.

Fast charging of your phone.

It is mainly divided into three categories: VOOC flash charging.

Fast charging technology, Qualcomm.

Quick Charge technology, MediaTek.

Pump Express Plus fast charging technology.

The three elements of fast charging.

In order to realize the fast charging function on the hand-honored machine, three elements need to be met, and all three are indispensable. Chargers, batteries, charge ICs. Charging smart portable appliances need to meet sufficient output current and output voltage, because the charger wiring has a large parasitic resistance, if you want to achieve a large charging current, the on-load output voltage of the charger needs to be higher.

12W fast charging is 5V,.

in battery capacity.

In the case of a fixed situation, fast charging is to shorten the charging time by increasing the charging power p. There are three ways to increase the power, which are to increase the voltage, increase the current, and increase the voltage and current at the same time.

Comparison of high-voltage fast charging and low-voltage fast charging.

Now there are only three mainstream fast charging technologies: Qualcomm.

Quick Charge and MediaTek.

The high-voltage fast charging of PEP and the low-voltage fast charging of VOOC flash charging, and all other fast charging technologies are modified on the basis of these three.

The advantage of high-voltage fast charging is that there is no need to make major modifications to the existing data lines and mobile phone batteries, Chengchang shouts that the chain cost is lower, and there are relatively many manufacturers with this technology, the compatibility of the charger is better, and the disadvantage is that it has to go through two step-downs, the conversion loss is large, and it is heated when charging.

Severe. At present, low-voltage fast charging only has VOOC flash charging, the biggest feature is that the loss is low during charging, and the early charging speed is much faster than high-voltage charging.