Graphene is a honeycomb like planar thin film formed by sp2 hybridization of carbon atoms. It is a quasi two-dimensional material with only one atomic layer thickness, also known as single atomic layer graphite. Its thickness is approximately 0.335nm, with different fluctuations depending on the pre...

How to choose a suitable lithium battery charger for electric vehicles? As the main means of transportation for short distance travel, electric vehicles are playing an increasingly important role in people's lives. The lithium battery charger for electric vehicles is better equipped with the ori...

How long can UPS power be used? How long can UPS provide power? Under normal circumstances, UPS power can last for about 8 years. If the quality is good, it can last even longer. The power supply time of the UPS battery is usually about 10 minutes. If you want to use it for 3-4 hours, you need to co...

How much capacity does the No.1 dry battery haveWe often use the number one battery frequently, but in daily life, many people definitely don't know how much capacity the number one dry battery has? Nanfu No.1 alkaline battery, with a discharge current of 1000mA, has no problem at 2000mA, and wi...

How many strings is the 48V20AH lithium-ion battery pack? How to calculate the number of strings and parallel connections required for a set of lithium-ion batteries? Series parallel connection of lithium-ion batteries is particularly common in some PACK factories. Generally, lithium-ion battery pac...

Method for judging the positive and negative poles of a battery: 1. Use a multimeter, set the multimeter to the voltage range, connect the red probe of the multimeter to one end of the battery, and connect the black probe of the multimeter to the other end of the battery. If the pointer of the multi...

How many years can the real lifespan of electric vehicle lithium iron phosphate batteries be used? Many friends say that electric vehicle lithium iron phosphate batteries will experience decay after 5 years of use, is that true? For new energy vehicles, battery life is mainly divided into two types:...

The weight and volume of free items carried by passengers on the train are: 10 kilograms for children (including free children), 35 kilograms for diplomatic personnel, and 20 kilograms for other passengers. The external dimensions of each item shall not exceed 160 centimeters in length, width, and h...

What is the discharge rate of lithium batteries? Is the higher the discharge rate of lithium batteries better? We all know that with the increase of charging and discharging times, the capacity of lithium batteries will decrease, which is directly reflected in the deteriorating performance of lithiu...

Lithium iron phosphate battery refers to a lithium-ion battery that uses lithium iron phosphate as the positive electrode material. The cycle life of long-life lead-acid batteries is about 300 times, with a maximum of 500 times. However, lithium iron phosphate power lithium-ion batteries have a cycl...