Anti-spring sleepy "artifact" can sound an alarm when dozing

As the saying goes: "Spring is sleepy and autumn is lacking". Now that the climate is gradually warming, people are also particularly prone to fatigue and sleepiness. Recently, a drowsiness reminder (see picture), which is referred to by netizens as an anti-spring sleepy "artifact", is quietly popular on the Internet.

Yesterday, the reporter searched on Taobao.com, hundreds of stores were selling doze reminders, with prices ranging from 5 to 20 yuan. The seller said that this anti-sleepiness reminder mainly uses the principle of electronic balance. Once the driver is sleepy during driving, the head is tilted forward, and the device worn on the ear will emit a "didi" warning alarm. The reporter noted that the online store with the highest sales volume has sold more than a thousand pieces in the last month.

However, compared with the online sales, "Drowsy Reminder" is hard to find in many physical stores in Beijing. Yesterday morning, a reporter visited a large auto parts city in the North Fourth Ring Road and found that there are no "sleepy reminders" in hundreds of businesses. "This thing is easy to sell online, because the online store can be purchased according to the demand, but we can't, so in the end it won't be sold at all." A store told reporters.

LiFePO4 Battery Pack

LiFePO4 Battery Pack refers to a battery pack that uses lithium iron phosphate (LiFePO4) as the positive electrode material, which is a common lithium-ion battery. LiFePO4 battery has been widely concerned and applied due to its advantages of high safety, long life, high energy density, and environmental protection.


Main effect:


Energy storage: The main function of the LiFePO4 Battery Pack is to store energy and store electrical energy so as to supply electricity to electrical equipment when needed. It can store electricity from solar panels or other power sources, and then supply power at night or when solar radiation is low.


Smooth power output: LiFePO4 battery has good power characteristics, can output power smoothly, and maintain a stable power supply. It can adjust and supplement power fluctuations to ensure the continuity and stability of the power supply.


Provide backup power: LiFePO4 Battery Pack can be used as a backup power source for power outages or emergencies, providing continuous power to critical equipment.


Differences from Solar Battery Pack:

Solar Battery Pack is a more general concept that refers to the overall unit formed by combining multiple solar battery cells. This battery pack can utilize different types of battery technologies, including lithium-ion batteries, lead-acid batteries, and more.


The LiFePO4 Battery Pack is a specific type of Solar Battery Pack, which refers to a solution that uses a lithium iron phosphate battery as a battery pack. Therefore, LiFePO4 Battery Pack is a subset of the Solar Battery Pack.


In general, LiFePO4 Battery Pack is a specific type of solar battery pack, which uses lithium iron phosphate lithium battery, which has the advantages of high safety and long life and is suitable for energy storage applications of solar power generation. The Solar Battery Pack is a broader concept, including all battery packs used to store solar energy or other energy, of which the LiFePO4 Battery Pack is just one of the implementations.


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