The 5 key points of lead-acid battery purchase

Time：2025-03-13 10:17:57

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Whether it is used for car starting, emergency lighting, or solar energy storage systems, the correct purchase of lead-acid batteries is crucial. Next, we will introduce the 5 key points of lead-acid battery purchase in detail.

In the field of energy storage, lead-acid batteries still occupy an important position with their advantages of low cost, mature technology and wide applicability. Whether it is used for car starting, emergency lighting, or solar energy storage systems, the correct purchase of lead-acid batteries is crucial. Next, we will introduce the 5 key points of lead-acid battery purchase in detail.

Capacity matching: meet the actual demand for electricity

The capacity is the core parameter of the lead-acid battery, which directly determines how much energy it can store, and then affects the use time. It is generally expressed in ampere-hours (Ah). When purchasing, we must first clarify the power consumption and estimated use time of the equipment. For example, an emergency lighting system with a total power of 50 watts is expected to continue working for 3 hours after a power outage. According to the formula: power (Wh) = power (W) × time (h), the required power is 150Wh. If a 12V lead-acid battery is selected, then according to the formula: capacity (Ah) = power (Wh) ÷ voltage (V), it is calculated that about 12.5Ah battery is needed. However, in practical applications, factors such as the depth of battery discharge should be considered, and batteries with 15Ah or larger capacity are usually selected to ensure reliable power supply. If the battery capacity is too small, the device may not reach the expected operating time; Too much capacity will cause cost waste and take up more space.

Battery type: Applicable to different scenarios

There are many types of lead-acid batteries, common are ordinary rich liquid, maintenance-free sealed and colloidal batteries. Ordinary liquid-rich batteries are affordable, the electrolyte is a dilute sulfuric acid solution, can be regularly checked and supplemented with distilled water, often used for maintenance conditions are not high, cost-sensitive scenes, such as some old cars, agricultural equipment, etc. Maintenance-free sealed battery, using lean liquid design and sealing structure, no need to add electrolyte in the normal use process, high gas recombination efficiency, can effectively reduce the acid fog escape, suitable for places with environmental cleanliness requirements, such as communication base station backup power supply, household emergency power supply. The colloidal battery is to change the electrolyte into a colloidal shape, its long cycle life, good overcharge and discharge resistance, more stable performance in high temperature, high altitude and other harsh environments, often used in solar energy storage power stations, wind energy storage systems and other outdoor scenes. Consumers need to accurately select the right battery type according to the characteristics and requirements of the specific use scenario.

Brand and quality: Guarantee of reliable quality

There are many brands of lead-acid batteries on the market, and the quality is uneven. Well-known brands often have advanced production processes and strict quality control systems. Take a well-known brand as an example, from the raw material procurement process on strict screening to ensure that lead, sulfuric acid and other raw materials purity standards; In the production process, the automatic casting and assembly process is used to ensure the uniform thickness of the battery plate and the welding is firm. Its products go through multiple testing processes, including capacity testing, charge-discharge cycle testing, air tightness testing, etc., and only batteries that pass all tests can enter the market. In contrast, some small brands or three no products, in order to reduce costs, the use of inferior materials, the production process is rough, the battery performance is unstable, prone to leakage, capacity decay and other problems, not only affect the normal operation of the equipment, but also may have safety risks. Therefore, the priority to choose a good market reputation and high visibility brand is the key to ensure the quality and performance of lead-acid batteries.

Service life and number of cycles: long-term benefit considerations

Service life and cycle times are important indicators to measure the durability of lead-acid batteries. The number of cycles refers to the number of complete processes of the battery from full charge state to discharge to specified termination voltage, and then charging to full charge under certain charging and discharging conditions. In general, the number of cycles of high-quality lead-acid batteries is about 300-800 times. For example, a battery with a design cycle of 500 times, if it is charged and discharged once a week, it can theoretically be used for about 10 years (500÷52≈10). However, the actual service life is affected by many factors, such as the depth of charge and discharge, the use of temperature, charging mode and so on. Shallow charge and shallow discharge (such as no more than 20% per discharge) can extend battery life, while deep discharge (discharge more than 80%) will accelerate battery aging. The high temperature environment will speed up the chemical reaction rate inside the battery and shorten the life. Low temperatures reduce battery capacity. Therefore, while paying attention to the nominal number of cycles of the battery, it is necessary to combine their own use habits and environmental conditions to comprehensively evaluate the actual service life of the battery to maximize long-term use benefits.

After-sales service: relieve worries

Perfect after-sales service is a part of the purchase of lead-acid batteries can not be ignored. High-quality after-sales service can provide consumers with timely solutions when battery problems occur. Regular manufacturers usually provide a certain period of warranty services, during the warranty period, if the battery due to quality problems, such as insufficient capacity, leakage and other failures, you can enjoy free maintenance or replacement services. In addition, some manufacturers will also provide consumers with battery maintenance guidance, including the correct charging method, storage precautions, etc., to help users extend battery life. Good after-sales service can not only protect the rights and interests of consumers, but also reflect the manufacturer's confidence in product quality, so that users in the process of use more peace of mind.

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