Will 18650 lithium ion battery and 3.7v battery be connected in parallel will damage the battery life?

18650 Li-ion 3.7v batteries are directly connected in parallel, which will not damage the battery life, and can be charged in parallel, but the charging time is long. After 18650 lithium-ion batteries are connected in parallel, when discharging, the inside of the tong is pulled out, the output current with high voltage is large, and the voltage drops quickly, and finally it is at the same level. When charging, the big one will be slapped inside, and the charging voltage will rise slowly, and the voltage will be lowered, and eventually it will be at the same level until it is fully charged. 18650 lithium ion battery 3.7v battery directly connected in parallel, it will damage the battery life, but it should be noted that the battery voltage difference should not be too large when the battery is connected in parallel. When the voltage difference between the two batteries is large, the battery with high voltage becomes the power source. , The low voltage becomes the internal balance at the beginning of the load, but because the internal resistance of the cell is small, the current will be large, which is a certain threat. Probably not, power banks are like this. However, there will always be losses when used. 18650 lithium ion batteries, that is, bai3.7v lithium ion batteries are directly connected in parallel, which will not damage the battery life. Because when charging, the backward battery will prevent the charging voltage from rising, until the dao finally reaches the end, the charging will be stopped; when discharging, the backward battery voltage will drop first, causing other batteries to supply more current, and finally reach the discharge termination voltage. In other words, lithium-ion batteries are directly connected in parallel, and both charge and discharge have self-balancing functions, which will not damage the battery life. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Is the consistency of lithium ion batteries really important to electric vehicle batteries?