Why use Lithium UPS Battery Replacement Lead-acid Batteries?

Author:BSLBATT    Publish Time: 2021-09-29

There are currently two types of batteries on the market, lithium batteries and lead-acid batteries. The UPS system application generally uses lead-acid batteries, but in addition to the advantages and disadvantages of the battery itself, the only advantage of choosing lead-acid batteries may be the price. Lithium ups batteries are quickly occupying the sales market due to their safety, light weight, long life, thorough charging, low maintenance costs, and no memory, and are slowly replacing traditional lead-acid batteries. What are the prospects for the development of lithium ups systems in the future?

Why replace the lead acid batteries with lithium UPS?

The role of data centers in the information age is becoming more and more important. In the face of the massive data services brought by cloud computing and the Internet of Things, if you want to maintain stable and reliable operation and maintenance, data centers need a higher-quality UPS system as the basic support.

lithium ups battery

As far as the overall situation on the market is concerned, most UPS bakcup power supplies use lithium batteries instead of lead-acid batteries. What is the reason for this situation? What is the difference between lithium batteries and lead-acid batteries? We will take you Walk into this discussion.

1. Lithium battery occupies less area and more space-saving cabinets

The energy volume density of lithium battery is 200~300W/L, and the lead-acid battery is only 60~90W/L. When meeting the requirements of the same backup time, the required area of lithium battery is 2/3 less than that of lead-acid battery, and it can be placed in a limited space. More batteries meet the requirements for power backup. At the same time, for customers of data center hosting, the space saved by lithium batteries supports the placement of more cabinets, helping customers improve efficiency.

2. The weight of the lithium battery is 1/3, the load-bearing requirement is low, and the floor load-bearing is free from modification

The energy weight density of lithium battery is 100~150W/kg, and the lead-acid battery is only 30~50W/kg. When meeting the requirements of the same backup time, the weight of lithium battery is 2/3 less than that of lead-acid, and the floor load-bearing requirement is lower, which is easy Site selection, the floor load-bearing does not need to be modified.

3. Lithium battery life is 2~3 times longer, no need to replace within 10~15 years life cycle

In scenarios where the grid environment is relatively good, the service life of lithium batteries can reach 10 to 15 years, and lead-acid batteries are generally replaced every 4 to 6 years. Compared with lead-acid batteries, lithium batteries can be replaced within 10 years, thereby improving power supply reliability, simplifying operation and maintenance, reducing OPEX, and making up for the short life of the power supply system.

4. There are many cycles of lithium battery, 3~10 times, fast charging and discharging, mostly used in new energy battery energy storage applications

The lithium battery cycle can support thousands of cycles of charging and discharging, which is 3 to 10 times that of lead-acid batteries. It can ensure a longer service life in bad scenarios. At the same time, lithium batteries can support high-current charging and charge faster. The charging time can be shortened to 1~2H, which is 4~5 times faster than lead-acid batteries. It is widely used in battery energy storage scenarios such as solar power generation and peak shaving.

5. LiFePo4 batteries are environmentally friendly, while lead-acid batteries are non-environmentally friendly batteries

Lithium batteries do not contain any heavy metals and rare metals, are non-toxic, have no pollution in production and use, comply with European RoHS regulations, and are environmentally friendly batteries.


There is a large amount of lead in lead-acid batteries, which will pollute the environment if they are not handled properly after being discarded. Therefore, from the perspective of national policy orientation, the expansion of lead-acid batteries has been restricted, or lead-acid batteries have been restricted in certain areas. The use of batteries, the future trend of lithium batteries to replace lead-acid batteries will become more and more obvious.

Lead-acid Battery Compared with Lithium Battery

1. Safety performance

Compared with lead-acid batteries, the composition data of lithium batteries has higher stability. Under the condition of high temperature or overcharge, the data of lithium battery will not collapse in structure or form strong oxidizing substances. When over-discharged, the lead-acid battery plate will vulcanize and cause the battery product to become inferior. Therefore, the safety of the lithium battery is stronger than that of the lead-acid battery.

Ferric phosphate: a safe cathode material

It is very important to choose the right lithium battery chemistry for the UPS. There are many common characteristics and materials between different lithium battery chemistries. LiFePO4 belongs to the same category as other lithium-ion batteries because they both use lithium ions as the main charge carrier in the battery. The main difference in lithium ion chemistry is the cathode material. Lithium iron phosphate is a very stable chemical substance that can provide excellent thermal and chemical properties to form a highly reliable, safe and long-lasting battery. The LiFePO4 battery is also non-toxic and environmentally safe because it has no corrosive materials or dangerous odors.

2. Cost difference

Under the same capacity, the volume and weight of the lithium battery are one-third of that of the lead-acid battery, which can effectively save the installation space without too much consideration of the load-bearing capacity of the floor.

Lithium batteries do not require frequent protection in a short period of time like lead-acid batteries, and the cycle life of lithium batteries is several times higher than that of lead-acid batteries. Lead-acid batteries also need air conditioning to regulate the overall environment, but the high-end LiFePo4 UPS battery itself has many adjustment functions, which can reduce a large part of the purchase cost of additional equipment, protection costs and electricity costs.


Perhaps lead-acid batteries have lower material costs and lower procurement costs, but their performance and lifespan are far inferior to lithium iron phosphate (LiFePO4) batteries. In the same size comparison, the lithium iron phosphate battery has larger capacity, longer life, high temperature and low temperature resistance, and is safe and environmentally friendly.

Although the initial cost of lithium iron phosphate batteries is relatively high, maintenance costs and replacement costs are waived. Suppose we compare the total cost of ownership of lithium iron phosphate batteries with three of the same size off-the-shelf lead-acid battery technologies. In the long run, the average cycle cost of lithium iron phosphate batteries is lower. These savings make them more valuable than lead-acid batteries, making them more suitable for long-term investment.

Although the purchase cost of the two is compared, lead-acid batteries are lower than lithium batteries, in the long run, the cost of LFP will be more than 5 times cheaper than lead-acid batteries.

Compared with traditional lead-acid batteries, they are large in size, high in energy consumption, difficult to maintain, and difficult to expand. Lithium battery solutions with light weight, low energy consumption, long life, simple maintenance, flexible and rapid deployment can bring more reliability to data centers Power supply guarantee. It is not difficult to see that lithium ups battery backup will become the future development trend.

BSLBATT ESS Battery self-developed lithium UPS backup, standard rack design, different sizes (4U/6U) designed according to different applications, simple appearance and easy installation. The company's products are widely used in: telecommunications 5G backup power supply, Broadband, telecommunications, utilities, microgrids, residential backup power, uninterrupted power, renewable energy, medical and navigation and other fields to flexibly meet the differentiated needs of customers in various industries and the pursuit of efficient innovation.

At this stage, BSLBATT ESS Battery adopts the lithium UPS batteries solution, which has already gained widespread commerce in many data center computer rooms. With its high reliability, reliability, environmental protection, energy saving, and intelligence, it has obtained the user's aspect ratio. Agree. I firmly believe that in this period of emphasis on environmental protection and the high efficiency of its application, BSLBATT ESS Battery lithium ups batteries may be widely used in marketing and promotion.

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