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Nowadays, the concept of maintenance free batteries has been confused, especially for motorcycles (some low-end car manufacturers do the same). The maintenance free battery mentioned by the manufacturer only requires that you do not add electrolyte for 1-3 years after the first addition of electrolyte. The normal lifespan of domestic batteries is within 2 years, while joint venture brands have slightly longer lifespan. Actually, this is a water battery, or better yet, a sealed lead-acid battery, which cannot be considered a truly maintenance free battery. This type of battery actually has low cost and average quality. In the past, domestic batteries used a white and slightly transparent shell, which allowed the electrolyte inside to be visible; But now everyone has become smarter (actually learned from those joint venture factories) to use opaque black outer packaging. Anyway, ordinary consumers can't see inside, so they sell it as dry batteries and sell it at a high price under the label of high-end goods. Especially those so-called original factory joint venture batteries, Guangyang, Uni President, and so on. The first use requires adding water, which is the water battery! There's nothing to justify!

Dry battery, scientific name valve regulated sealed lead-acid battery. Currently, mainstream cars and motorcycles use regular maintenance free batteries. This type of battery can be used directly on the vehicle after sale, without the need to add water. During use, there is no need to check the electrolyte, do not add water, and do not open the sealing cover under any circumstances. These types of batteries have extremely low self discharge and are suitable for long-term storage. This is the true maintenance free battery, with a longer service life. The cost of recycling used batteries is high, and the production cost of enterprises is high, so the price is relatively high. However, many merchants are not willing to sell and may have lower profits

Electric bicycles and electric motorcycles have become important modes of transportation in large, medium, and small cities, widely accepted by people. Due to the generally higher price of electric bicycles compared to traditional bicycles, their service life has become the most concerning issue for people. In fact, as one of the core components of electric bicycles, the service life of the battery largely determines the service life of the electric vehicle. Regarding this, Chaowei Battery stated that strengthening battery maintenance will be able to extend the service life of the battery. It is understood that the batteries used in electric vehicles are lead-acid batteries! The dry battery is a trap!

Additionally, I would like to send you some information: electric vehicle startup

The starting current of electric vehicles is very high, especially for high-power electric motors, the starting current is even greater. High current can damage the battery plates, and the best way is to ride like a bicycle before starting the electric vehicle power supply.

Battery discharge

After using the battery for a period of time, some active substances will inevitably sink. If the active substances are not activated in time, it will inevitably have some impact on the capacity of the battery. Therefore, when frequently using electric vehicles, it is necessary to deeply discharge the battery once every season.

Used for towing tricycles, water batteries have a higher cost-effectiveness and can be equipped with larger capacity and traction batteries. Lithium batteries, besides being expensive, are technically the most suitable for applications such as mobile phones. Lithium battery technology is advancing, but progress is quite full.

The water battery you mentioned should be a lead-acid battery, which has been used for many years and has mature technology. Its advantages and disadvantages are very obvious. Compared with lithium batteries, lead-acid batteries have significant differences in unit energy storage, charging characteristics, power characteristics, and many other aspects;

Lithium batteries are currently more expensive than lead-acid batteries due to production processes, materials, labor, and other factors. With the continuous decline in lithium battery prices, they are gradually replacing lead-acid batteries, which is a major trend.

Lithium batteries "are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. The lithium metal battery was first developed by Gilbert N. in 1912 Lewis proposed and studied it. In the 1970s, M.S. Whittingham proposed and began researching lithium-ion batteries. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very high environmental standards. So, lithium batteries have not been applied for a long time. With the development of science and technology, lithium batteries have now become mainstream.

Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation product of rechargeable batteries, lithium metal batteries, was born in 1996. Its safety, specific capacity, self discharge rate, and cost-effectiveness are all superior to lithium-ion batteries. Due to its own high-tech requirements, only a few companies from countries are currently producing this type of lithium metal battery.

Lithium batteries were first used in pacemakers. The low self discharge rate and gentle discharge voltage of lithium batteries enable pacemakers implanted in the human body to operate for a long time without the need for recharging. Lithium batteries generally have a nominal voltage higher than 3.0 volts and are more suitable as integrated circuit power supplies. Manganese dioxide batteries are widely used in calculators, digital cameras, and watches.

In order to develop varieties with better performance, people have conducted research on various materials to manufacture unprecedented products.

In 1992, Sony successfully developed lithium-ion batteries. Its practicality greatly reduces the weight and volume of portable electronic devices such as mobile phones, laptops, calculators, etc.

ExxonMobil's M. in the 1970s S. Whittingham used titanium sulfide as the positive electrode material and lithium metal as the negative electrode material to create the first lithium battery.

2. In 1980, J. Goodenough discovered that lithium cobalt oxide could be used as a positive electrode material for lithium-ion batteries.

3. R. from the Illinois Institute of Technology in 1982 R. Agarwal and J R. Selman discovered that lithium ions have the property of embedding into graphite, which is a rapid and reversible process. At the same time, the safety hazards of lithium batteries made of metallic lithium have attracted much attention, so people are trying to use the characteristic of lithium ions embedded in graphite to make rechargeable batteries. The first available lithium-ion graphite electrode was successfully developed by Bell Laboratories.

4. In 1983, M Thackeray, J. Goodenough, and others discovered that manganese spinel is an excellent positive electrode material with low cost, stability, and excellent conductivity and lithium conductivity. Its decomposition temperature is high and its oxidizing property is much lower than that of lithium cobalt oxide. Even in the event of short circuit or overcharging, it can avoid the danger of combustion and explosion.

5. In 1989, A. Manthiram and J Goodenough found that using a positive electrode with polymeric anions will generate higher voltage.

6. In 1991, Sony Corporation released the first commercial lithium-ion battery. Subsequently, lithium-ion batteries revolutionized the face of consumer electronics products.

7. In 1996, Padhi and Goodenough discovered phosphate salts with olivine structure, such as lithium iron phosphate (LiFePO4), which were superior to traditional positive electrode materials and have therefore become the mainstream positive electrode material.

With the widespread use of digital products such as mobile phones, laptops, etc., lithium-ion batteries have been widely used in these products with excellent performance and are gradually developing into other product application fields. In 1998, Tianjin Power Research Institute began commercial production of lithium-ion batteries. Traditionally, people also refer to lithium-ion batteries as lithium batteries, but these two types of batteries are different. Lithium ion batteries have become mainstream.

Carbon negative electrode material

The negative electrode materials that have been practically used in lithium-ion batteries are basically carbon materials, such as artificial graphite, natural graphite, intermediate phase carbon microspheres, petroleum coke, carbon fiber, pyrolytic resin carbon, etc.

Tin based negative electrode material

Tin based negative electrode materials can be divided into two types: tin oxides and tin based composite oxides. Oxide refers to the oxide of various valence states of tin metal. There are no commercialized products.

Nitrides

There are also no commercialized products.

Alloy class

Including tin based alloys, silicon-based alloys, germanium based alloys, aluminum based alloys, antimony based alloys, magnesium based alloys, and other alloys, there are also no commercial products.

Nano scale

Nanocarbon nanotubes and nanoalloy materials.

Nano oxide

At present, according to the latest market development trends in the lithium battery new energy industry in 2009, many companies have begun to use nano titanium oxide and nano silicon oxide added to traditional graphite, tin oxide, and nanocarbon tubes, greatly improving the charging and discharging capacity and frequency of lithium batteries.

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