What are the classifications of 18650 rechargeable battery lithium 3.7v 3500mah

　　18650 rechargeable battery lithium 3.7v 3500mah are one of the most widely used batteries today. Whether it is a car, a forklift, or an electric vehicle, a single battery or battery pack can be used to power the equipment and make the equipment operate normally. In fact, there are many types of batteries. We can classify batteries according to their purpose, structure and maintenance methods.

　　1. According to the relevant standards of our country, the main battery series products are:

　　Starting batteries: Mainly used for starting and lighting cars, tractors, diesel ships, etc.

　　Stationary batteries: Mainly used in communications, power plants, and computer systems as backup power sources for protection and automatic control.

　　Traction batteries: Mainly used for various battery vehicles, forklifts, forklifts and other power sources.

　　Railway batteries: Mainly used for starting and lighting power of railway diesel locomotives, electric locomotives, and passenger cars.

　　Motorcycle batteries: mainly used for starting and lighting various specifications of motorcycles.

　　Coal mine batteries: mainly used for traction power supply of electric locomotives.

　　Batteries for energy storage: mainly used for wind power and hydropower energy storage.

　　Classified by battery plate structure: formed, paste-coated and tubular batteries.

　　According to the battery cover and structure classification: there are open type, exhaust type, acid-proof and explosion-proof type and sealed valve-controlled type batteries.

　　According to the battery maintenance method, there are ordinary type, low maintenance type and maintenance-free type batteries.

　　2. Working principle of lead-acid battery

　　The positive active material of a lead-acid battery is lead dioxide, the negative active material is sponge lead, and the electrolyte is a dilute sulfuric acid solution. The discharge chemical reaction is that lead dioxide, sponge lead, and electrolyte react to produce lead sulfate and water, Pb (negative electrode) +PbO2 (positive electrode) +2H2SO4====2PbSO4+2H2O (discharge reaction) The charging chemical reaction is that lead sulfate and water are converted into lead dioxide, sponge lead and dilute sulfuric acid. 2PbSO4+2H2O====Pb (negative electrode)+PbO2 (positive electrode)+2H2SO4 (charging reaction) The rated voltage of a lead-acid battery is 2.0V. It is generally connected in series at 6V and 12V for starting lighting in cars and motorcycles. Single batteries are generally connected in series to 48V, 96V, 110 or 220V for different occasions. Rubber, PVC, PE or AGM separators are used between the positive and negative plates in the battery, which have extremely low resistance, few impurities and stable ions to pass through.

　　3. Daily precautions for traditional open-type batteries:

　　① Pay attention to the quantity, density and charging degree of the electrolyte, especially the charging system closely related to it. If the charging capacity is large, the battery will lose a lot of water, which will easily cause the active material of the plate to fall off, causing a short circuit at the bottom. High internal temperature of the battery shortens its life. If the charge capacity is small, it will easily cause the battery to lose power. When the battery loses power for a long time, it can lead to irreversible sulfation of the plates, which is manifested in a rapid rise in voltage during the charging process. , completed in a short time, and the voltage drops rapidly during discharge.

　　② For the purity of the electrolyte, the battery-specific electrolyte or replenishing solution is generally used for filling. It is strictly forbidden to use ordinary sulfuric acid and tap water instead.

　　③Keep the surface used in daily use clean and the exhaust vent unobstructed.

　　④ Fully charge the battery when not in use, and recharge it once every three months.

　　4. Daily precautions for sealed valve-regulated 18650 rechargeable battery lithium 3.7v 3500mah:

　　① Pay attention to the range of charging voltage. The voltage is generally controlled at 2.15±0.1V/single cell during float charging and 2.35±0.1V/single cell during cycle use. If the instructions require it, the operation should be carried out according to the instructions.

　　② Pay attention to the ambient temperature of use, which is generally not more than 30 degrees. When the temperature changes greatly, the voltage adjustment should be strengthened.

　　③ Products from different manufacturers cannot be mixed, and new and old products from the same manufacturer cannot be mixed.

　　④For sealed valve-regulated 18650 rechargeable battery lithium 3.7v 3500mah, it is best not to open the cover to replenish the electrolyte and replace the safety valve yourself.

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