Mobile power is a portable charger that can be carried by individuals and can store electrical energy. It is mainly used for charging consumer electronic products such as handheld mobile devices. It is especially used in situations where there is no external power supply. Its main components include: a battery used as electric energy storage, a circuit to stabilize the output voltage (DC-DC converter), and most of the mobile power supplies have a charger to charge the built-in battery.
Features: ● 20000mAh ridiculous big power, offer enough energy to your digital devices. ● Intelligent output, provide matched currents to different devices. ● Elegant aluminum alloy surface, comfortable touch feeling. ● Ultra-thin and portable. ● The battery has passed the MSDS ( Material Safety Data Sheet ). ● Battery type: Li-polymer ● Input: 5V 2A ● Output: 5V 2.4A Battery Capacity(mAh): 15001-20000 Package weight: 0.954 kg Product Size(L x W x H): 16.30 x 11.80 x 1.40 cm / 6.42 x 4.65 x 0.55 inches Package Size(L x W x H): 21.00 x 14.50 x 2.80 cm / 8.27 x 5.71 x 1.1 inches Package Contents: 1 x Vinsic 20000mAh Power Bank, 1 x USB Charging Cable, 1 X User Manual
It is a portable charger that can be carried by individuals and can store electrical energy. It is mainly used for charging consumer electronic products such as handheld mobile devices. It is especially used in situations where there is no external power supply. Its main components include: a battery used as electric energy storage, a circuit to stabilize the output voltage (DC-DC converter), and most of the mobile power supplies have a charger to charge the built-in battery. The emergence of mobile power was originally used to charge consumer electronic products where there is no external power supply, but because its output interface is a highly versatile USB interface, it can also be used as other devices or devices that use USB interface as power input. Equipment power supply.
● 20000mAh ridiculous big power, offer enough energy to your digital devices. ● Intelligent output, provide matched currents to different devices. ● Elegant aluminum alloy surface, comfortable touch feeling. ● Ultra-thin and portable. ● The battery has passed the MSDS (Material Safety Data Sheet ). ● Battery type: Li-polymer ● Input: 5V 2A ● Output: 5V 2.4A Battery Capacity(mAh): 15001-20000 Package weight: 0.954 kg Product Size(L x W x H): 16.30 x 11.80 x 1.40 cm / 6.42 x 4.65 x 0.55 inches Package Size(L x W x H): 21.00 x 14.50 x 2.80 cm / 8.27 x 5.71 x 1.1 inches Package Contents: 1 x Vinsic 20000mAh Power Bank, 1 x USB Charging Cable, 1 X User Manual
The big red box "20000mAh" is the battery capacity of Xiaomi, which can be understood as the theoretical capacity and battery cell capacity. During the power conversion process, energy consumption will occur, and the final effective power must not reach 20000mAh. The battery capacity is 20000mAh. Why is the actual output capacity different by several thousand mAh? Take the 18650 battery cell as an example. The battery cell voltage is usually 3.7V, but the actual voltage when charging the mobile phone is 5V. According to the power bank conversion efficiency of 100%, the theoretical capacity converted to the output is 20000mAh×3.7/5 =14800mAh. So if you claim a 2w mAh power bank, the actual output capacity is about 14800, which is very good. In order to compare the actual output capacity more fairly, we all use the conditions of 5V and 1A to test the discharge capacity, and it turns out that some power banks do not even reach 10,000.
main feature
-Ultra-large capacity 20000mAh portable power bank -Two-way fast charging, whether it is charging or discharging, is more effective -Support low current discharge, suitable for Bluetooth headsets and Xiaomi bracelets -Made of high temperature resistant ABS material, round edge design -LED indicator to show you power status -Support simultaneous charging and discharging -Fashionable design, compact size -Built-in multiple protection Brand: Xiaomi Type: Standby power bank Capacity range:> 10000mAh Capacity (mAh): 20000mAh Connection type: micro USB, two USB output ports Battery type: lithium polymer battery color: White Material: ABS Input: 5V / 2A, 9V / 2A, 12V / 1.5A Output: 5.1V / 2.4A, 9V / 2A, 12V / 1.5A, maximum 18W Package weight: 0.430 kg Product size (length x width x height): 13.55 x 6.76 x 2.39 cm / 5.33 x 2.66 x 0.94 inches Packing size (length x width x height): 17.00 x 9.50 x 3.50 cm / 6.69 x 3.74 x 1.38 inches Package contents: 1 x mobile power supply, 1 x USB cable
What is the difference between cheap and expensive power banks with the same nominal capacity?
In terms of the production and manufacturing process of the battery cells of the power bank, the cheap power bank battery cells have poor quality and low cost, and the more expensive power bank battery cells have high costs;
The peripheral control chip needs to be authorized by a fast charging agreement such as Apple Qualcomm, and the price will naturally be high;
The design of appearance and service life will also cause price differences;Related Products
The principle of the mobile power supply is simple. When an external power supply can be found, the built-in battery is charged in advance, that is, input electric energy, and pre-stored in the form of chemical energy. When needed, the battery provides energy and generates electric energy, which is converted by voltage The device (DC-DC converter) reaches the required voltage, and the output terminal (usually a USB interface) outputs and supplies the required equipment to provide power for charging or other purposes.
The conversion rate is one of the cores of mobile power supplies. Without professional testing equipment, users cannot test the conversion rate of mobile power supplies. You need to know through the counter. Usually, the requirement for conversion rate is 85% or more. Due to the different specific circuit designs of various electrical products, mobile power cannot support charging for every electronic product. Therefore, whether it can be applied to various electronic products as much as possible is one of the main indicators for measuring mobile power. If you only use the power bank for emergency use in a short period of time, it is enough to choose a power bank of about 5000Ah, which can fully charge your smartphone twice, and the power bank itself can be charged in 6 hours, which can fully meet the needs of general users. demand.
The product structure of mobile power is relatively simple, mainly composed of three parts: storage medium, circuit board and shell. Among them, there are two types of storage media: polymer batteries and lithium batteries. At present, most mobile power supplies use lithium batteries, and among them, 18650 batteries dominate. The output voltage of a single 18650 cell is between 2.7-4.2V and the capacity is 2600m Ah. In order to increase the storage capacity of the mobile power supply, the method of connecting multiple battery cells in parallel is usually used, so the nominal capacity of the mobile power supply is generally a multiple of 2600mAh
The emergence of mobile power has undoubtedly alleviated the problem of insufficient power consumption of smart terminals at this stage. The portable and movable characteristics of mobile power have brought us great convenience. The mobile power supply is now a portable product. On the basis of ensuring the product capacity, how to reduce the volume of the product and make the product more compact and easy to carry is one of the trends in the technological innovation of the appearance of the mobile power supply! Secondly, how to apply advanced industrial design concepts and even humanistic concepts to the appearance design of mobile power supplies to make mobile power supplies feel more comfortable and fashionable, which is also the trend of mobile power technology innovation. Power bank with built-in charging cable. For users, in addition to being able to charge digital products, mobile power users also need to pursue the portability of mobile power. Therefore, a mobile power supply with a built-in charging cable came into being. With the built-in charging cable, users can no longer worry about not being able to find a charging cable and adapter. This built-in three-in-one mobile power product has built-in Apple charging cable, MICRO charging cable and MINI charging cable, which is compatible with most mobile phones on the market. A mobile power supply with LED lighting and charging function, which is currently the most common on the market. The advantage is that this type of mobile power supply has a large capacity and is equipped with LEDs to facilitate lighting in low light conditions, which is very suitable for professional external power supplies.
Mobile power supply is a power product that can be carried by individuals, can store electrical energy by themselves, and can charge mobile devices, especially handheld devices (such as mobile phones, tablet computers, etc.). Mobile power is usually used in occasions where there is no external power supply. Its main components include batteries that store electrical energy, charge management circuit, discharge management circuit, etc. Typical products are DC 5V input and DC 5V output. The product structure of mobile power is relatively simple, mainly composed of three parts: storage medium, circuit board and shell. Among them, there are two types of storage media: polymer batteries and lithium batteries. At present, most mobile power supplies use lithium batteries, and among them, 18650 batteries dominate. The output voltage of a single 18650 cell is between 2.7-4.2V and the capacity is 2600m Ah. In order to increase the storage capacity of the mobile power supply, the method of connecting multiple battery cells in parallel is usually used, so the nominal capacity of the mobile power supply is generally a multiple of 2600mAh. The working voltage range of the battery of electronic digital products is also 2.7-4.2V. In order to be able to charge it, there must be a boost circuit inside the mobile power supply to increase the output voltage to 5V before discharging. Correspondingly, the charging voltage (i.e. input voltage) of the mobile power supply is also 5V, and DC charging is carried out through an external power adapter or a computer USB port
