what should be paid attention to when buying lithium batteries for inverter system?

Application of lithium battery in household backup power system and solar energy system

In recent years, with the improvement of people's living standards and people's awareness of environmental protection, many off-grid solar systems and household power backup power use lithium batteries, so what are the benefits of lithium batteries, and what should be paid attention to when buying ?

Advantages of lithium batteries

1. Lithium battery has a high voltage platform, which is convenient to form a battery power pack, has high storage energy density, and is lighter than lead-acid batteries

2. Lithium battery has a high voltage platform, which is convenient to form a battery power pack, has high storage energy density, and is lighter than lead-acid batteries

3. The relative density of high energy storage technology is 460-600wh/kg, which is 6-7 times that of lead-acid batteries.

The net weight of lithium-ion batteries is lighter than that of lead-acid batteries, and the net weight of lithium-ion batteries is about 1/5 or 1/6 of the same volume

The lithium battery has a relatively long service life, which can reach more than six years. It has high power tolerance, is convenient for high-intensity startup acceleration, and has a low self-discharge rate and no memory effect.

4.Lithium battery has strong high and low-temperature adaptability, green and environmental protection.

Disadvantages of lithium batteries

1. Lithium batteries are relatively poor in safety. If there is a collision during transportation, there is a risk of explosion. However, with the update of technology and the improvement of technology level, its safety performance should be better and better in the future.

2. It cannot be charged and discharged under high current, and the safety factor is poor.

3. The price is more expensive than ordinary lead-acid or gel batteries

Matters needing attention when choosing a lithium battery:

There is a BMS battery management system inside the lithium battery, which is the link between the battery and the user. Its function is to improve the utilization rate of the battery and prevent the battery from overcharging and overdischarging. Therefore, when choosing a lithium battery, pay attention to the allowable discharge current of the BMS. Generally, the discharge current of the BMS should be 1.2 times the discharge current of the inverter. If the BMS discharge current is too small, when the inverter is under load, the lithium battery will be over-current and the output will be shut down, causing the system to fail to work.

Warm reminder: During the use of lithium batteries, the battery should be prevented from overcharging and over-discharging. Because it is necessary to choose an inverter that can be used for lithium batteries.

 lithium battery used for inverter system

SWN inverters can be used for lead-acid batteries, gel batteries, and lithium batteries. We can set the parameters of lithium batteries provided by customers during production or customers can set them according to the parameters of lithium batteries.

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