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Can UPS use lithium-ion batteries as backup power? What is the difference between lithium-ion battery UPS and lead-acid battery? Which is better to use lithium-ion batteries or lead-acid batteries for UPS power supply? These are common doubts for people who are not familiar with lithium-ion battery UPS. So, that's all for the editor to help those who are puzzled.

What is UPS?

UPS (Uninterruptible Power System/Uninterruptible Power Supply), also known as Uninterruptible Power Supply, is a system equipment that connects a battery (mostly lead-acid maintenance free battery) to the host and converts DC power into mains power through module circuits such as the host inverter. Important for providing stable and uninterrupted power supply to individual computers, computer network systems, or other power electronic devices such as solenoid valves, pressure transmitters, etc.

What is lead-acid battery?

The electrode is mainly made of lead and its oxides, and the electrolyte is a type of battery in sulfuric acid solution. English name: Lead acidbattery. In the discharge state, the important component of the positive electrode is lead dioxide, and the important component of the negative electrode is lead; In the charging state, the important components of both positive and negative electrodes are lead sulfate.

What is a lithium-ion battery?

Lithium ion batteries are a type of rechargeable battery that relies heavily on the movement of lithium ions between the positive and negative electrodes for operation. During the charging and discharging process, Li+is intercalated and deintercaled back and forth between the two electrodes: during charging, Li+is deintercaled from the positive electrode, embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium rich state; When discharging, the opposite is true.

From the above meanings of UPS, lead-acid battery, and lithium-ion battery, it can be found that in the past, UPS was mostly lead-acid battery, while lithium-ion battery UPS has only rapidly developed in recent years.

The biggest difference between lead-acid batteries and lithium-ion batteries lies in the difference in raw materials. The important components of lead-acid batteries, both positive and negative, are lead sulfate. Lead sulfate is an acidic corrosive product, which requires special attention to safety during the production process. After the lead-acid battery is scrapped, the recycling and disposal of the battery are also important. If it is abandoned in the wild, it will cause pollution to that area and pose a high risk.

The raw material for lithium-ion battery UPS is lithium, which is mostly made of lithium iron phosphate. It is safer than traditional positive electrode materials, especially in terms of high temperature resistance and superior overcharging resistance.

What are the advantages of lithium-ion battery UPS over lead-acid battery?

After being stored at zero voltage for 7 days, the battery has no leakage, good performance, and a capacity of 100%; After 30 days of storage, there is no leakage, good performance, and a capacity of 98%; After 30 days of storage, the battery underwent 3 cycles of charging and discharging, and its capacity was restored to 100%.

Short circuit battery: The battery does not ignite or explode. The surface temperature of the battery is ≤ 150 ℃.

Under the same capacity, the volume and weight are both one-third of lead-acid, effectively saving space in the computer room without considering the floor load-bearing and maintenance free. Centralized network management monitoring and modular chassis installation reduce operation and maintenance costs.

The working temperature range is -20~60 ℃. Do not use air conditioning to reduce equipment installation, maintenance, and electricity costs.

Non polluting, free from any harmful heavy metal elements to the human body, with high safety, it is currently the safest lithium-ion battery.

Regarding the same fully charged UPS, the discharge output characteristics of lithium-ion battery UPS are very stable when using different discharge currents at the same temperature.

Compared to lead-acid batteries, lithium-ion battery UPS has many advantages, so in recent years, lithium-ion battery UPS is gradually replacing lead-acid batteries in the application field. After all, safety and environmental protection are characteristics that everyone values.

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