The proportional relationship between the static voltage of the lithium battery and the remaining capacity

　　The voltage of a lithium battery will gradually decrease with the passage of electricity, and has a considerable slope. Generally speaking, the higher the voltage of a lithium battery, the greater its capacity.

　　The following is the ratio between the static voltage and the remaining capacity of a standard ternary lithium battery.

　　100%----4.20V

　　90%-----4.06V

　　80%-----3.92V

　　70%-----3.87V

　　60%-----3.80V

　　50%-----3.75V

　　40%-----3.65V

　　30%-----3.60V

　　20%-----3.55V

　　10%-----3.50V

　　5%------3.40V

　　0%------3.00V

　　If you do not use or store the lithium battery for a long time, it is best to keep the power of the lithium battery between 30%-50%. At the same time, the environment for storing lithium batteries must be kept at a suitable temperature, generally 20-25 ℃, and there should be no humidity, direct sunlight, etc.

　　In the absence of high-end BMS or test equipment, you can make a preliminary judgment on the remaining capacity of the lithium battery based on the above content.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.