KEYSION 3 Ports Quick Charger QC 3.0 30W USB Charger For

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.

KEYSION 3 Ports Quick Charger QC 3.0 30W USB Charger For iphone XS Max XR 8 7 Plus for Samsung Huawei Xiaomi Fast Charger QC3.0 

NOTE: 1. If your device do not support QC 2.0/3.0, the charging speed will be normal. 2. The QC3.0 output can not work at the same time with other two common outputs. 3. buyer please leave your full name due to shipping policy!     Product Description   Benefit from the next-generation in fast charging; reduce smartphone and tablet downtime significantly with advanced Qualcomm® Quick ChargeTM 3.0 Technology.   Quick Now Gets Quicker  best selling Quick Charge 2.0 Charging adapter now gets upgraded with Quick Charge 3.0 technology, making it compatible with both existing Quick Charge 2.0 devices and future Quick Charge 3.0 devices. You device can get up to 80% of in as short as 35 minutes.     High Efficiency The fastest charging technology, 38% more efficient than Quick Charge 2.0. And more efficiency makes less heat when charging.     Truly Universal Design While offering blazing fast charging for our expanding number of compatible devices, the innovative charger is equally fast in charging non-compatible smartphones and tablets with its 5V/2A maximum current.     Quick Charge 3.0 Devices HTC One A9 HTC 10 Samsung Galaxy S7 / S7 Edge LG G5 Xiaomi 5 / Mi Max Nubia Z11 / Z11 Max Asus ZenFone 3 / Asus ZenFone 3 Deluxe / Asus ZenFone 3 Ultra General Mobile GM5+ HP Elite x3 LeEco Le MAX 2 LeEco (LeTV) Le MAX Pro Lenovo ZUK Z2 Pro NuAns NEO Qiku Q5 / Qiku Q5 Plus Sugar F7 Vodafone Smart platinum 7 ZTE Axon 7 &more smartphones