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A dry battery is a maintenance free valve controlled battery with an opaque outer shell, and the liquid cannot be seen when opening the filling hole. Dry batteries require almost no maintenance, saving time and effort!

The outer shell of a water battery is usually transparent, and the electrolyte inside can be seen from the outside. Small capacity batteries are usually dry batteries, while large capacity batteries with a capacity of 120AH or above are water batteries. Water batteries are well maintained and have a longer lifespan than dry batteries. If not maintained properly, their lifespan may actually be shorter than dry batteries! The key is to see how users maintain it.

The most feared thing about a water battery is a lack of liquid. Regularly observe the liquid level of the battery, and add distilled water or electrolyte in a timely manner (depending on the battery level, add electrolyte when the battery level is significantly low, and charge it in a timely manner). While maintaining the battery, apply a small amount of lubricating grease (butter) to both ends of the+and - electrodes to prevent rusting and extend the battery's service life!

Nowadays, cars generally use maintenance free batteries, and the lifespan of a car battery is generally about 3 years. The original battery of a new car can be used for more than 3 years. In addition, if you frequently travel long distances, it may take longer. If you run more in the city, it usually takes about two years

In fact, the electrochemical reaction in ordinary lead sulfate batteries cannot be separated from water. Whether it is a sealed maintenance free battery or a colloidal battery, water is needed to complete charging and discharging. Therefore, in fact, all lead sulfate batteries are water batteries, but the way they store water is different

1. The most common type is the so-called water battery, where the battery plates are soaked in dilute sulfuric acid. During the charging and discharging process, water will evaporate, requiring regular addition of distilled water and removal of impurities and powders deposited at the bottom

2. Sealed maintenance free battery, using paper filled with dilute sulfuric acid as the reaction carrier for the electrode plate, the advantage is that it can be used upside down. When the battery is not charged or discharged very strongly or the battery is not very hot, the battery maintains a certain degree of sealing to avoid water evaporation. However, when the battery temperature is relatively high, there is still a certain amount of water running out. After using the battery for a period of time, a small amount of distilled water needs to be added. At the same time, because there is no flowing solution in the battery, the substances peeled off from the electrode plate will not deposit to the bottom, causing a short circuit in the battery. But these substances will continue to cover the surface of the electrode plate until too much, and the battery's storage and discharge capacity will be weakened, making it difficult to clean. Therefore, some people say that maintenance free batteries are actually unable to maintain the battery

If you don't have enough experience to determine when to add water and clean battery impurities, it is recommended to use a sealed maintenance free battery. When the battery has poor energy storage, replace it with a new one

However, in terms of service life, adding water to the battery is a bit longer and the current intensity is better. My previous battery was regularly filled with water, filtered, and charged with an intelligent charging pool. It has been used for 8 years and has always been started with a battery, so its storage performance is not much worse than the new one

The difference is in the material. Dry batteries belong to the primary batteries in chemical power sources and are a type of disposable battery. Because the electrolyte of this chemical power supply device is a non flowing paste, it is called a dry battery, which is relative to batteries with a flowing electrolyte. There are no water batteries, only batteries.

Water battery is a type of lead-acid battery. Due to the high liquid content inside the battery, it is commonly referred to as a "water battery". The liquid in a water battery is relatively easy to lose and needs to be replenished frequently, so it is also called a maintainable battery. This type of battery is mostly used in cars and motorcycles, with a relatively high discharge current! So it's also called traction battery, starting battery.

Expanding Information

Regularly checking the level of electrolyte in the battery and adding electrolyte in a timely manner is the most important daily maintenance step. During the charging and discharging process of a battery, the water in the electrolyte will gradually decrease due to electrolysis and evaporation, resulting in a decrease in the electrolyte level.

If not replenished in a timely manner, it may shorten the service life of the battery. Distilled water should be replenished in a timely manner, and pure drinking water should not be used as a substitute. Because pure water contains multiple trace elements, it can have adverse effects on batteries.

Maintenance-free batteries: Nowadays, the concept of maintenance free batteries has been confused, especially for motorcycles (some low-end car manufacturers also do the same). The maintenance free battery mentioned by the manufacturer is only recommended not to add electrolyte for 1-3 years after your first use. (Domestic batteries have a normal lifespan of 2 years, while joint venture brands have a slightly longer lifespan). In fact, this is a water battery, and the better thing is a sealed lead-acid battery, which cannot be said to be a truly maintenance free battery. This type of battery is actually low-cost and of average quality. In the past, domestic batteries used a white, slightly transparent outer shell where the electrolyte inside could be seen; And now everyone has learned to be smart (actually from those joint venture factories), all of which are packaged in opaque black shells. After all, most consumers cannot see inside, so they sell them as dry batteries and sell them at high prices under the brand name of high-end goods. Especially those so-called original factory joint venture batteries, solar cells, Uni President, and so on. The first time you use it, you need to add water, which is a water battery! There's nothing to defend!

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

Electric bicycles and motorcycles have become important means of transportation in large, medium, and small cities, and are widely accepted by people. Due to the relatively high 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 batteries largely determines the service life of electric vehicles. Regarding this, Chaowei Battery stated that strengthening the maintenance of batteries will be able to extend their service life. It is understood that the batteries used in electric vehicles are all lead-acid batteries! Dry batteries are said to be deceiving!

Also, I'll send you some information: Electric vehicle startup

The starting current of electric vehicles is high, especially for high-power motors with electric friction, the starting current is even higher. High current can damage the battery plates, and the best way is to ride the electric bike like a bicycle before starting, and then start the power supply of the electric bike.

Battery discharge

After using the battery for a period of time, there will inevitably be some active substances sinking. If the active substances are not activated in time, it will inevitably have some impact on the capacity of the battery. Therefore, when using electric vehicles frequently, it is necessary to achieve deep discharge of the battery once a quarter.

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