Why do LiFePO4 batteries need to be fully-charged regularly?

The charging requirements for LiFePO4 and li-ion are still not quite the same, mainly because of the difference in consistency. Especially for battery packs, the charging and discharging are most stressed by the current and voltage concentration on both sides of the charging and discharging ends, as well as the voltage difference between each cell during storage or use, so it needs to be charged by balancing (those who have played with model cars should be familiar with it), replenishing and balancing each cell by low current until it is full.

Therefore, the reason for giving LiFePO4 a full charge is only to balance the charge so that the individual cells do not vary too much, not to say that a full LiFePO4 will not reduce cycle life. The good thing is that lithium iron has a long cycle life, so you don't have to get too hung up on it. Regular full charges are needed, but as for overcharging full charges are definitely still a no-no. For this reason, if you want to protect and extend the life of LiFePO4 as much as possible, you can refer to the following ways.

1. Shallow charging and discharging will not harm the battery, in most cases it can be charged up to 90%.

2. Charge the battery fully at regular intervals (a week or two, or a month) to balance the charge of the individual cells.

3. If not necessary, do not full discharge or even over-discharge.

At the same time in the battery pack combination process lithium battery protection board try to choose with balanced charging and discharging function of the protection board, so as to maximize the efficiency of each cell charging and discharging flow. In turn, maintain the service life and energy density of the battery. When choosing cells in the battery pack, consistency matching must be carried out, including voltage, capacity, internal resistance and other parameters, to be controlled within a certain range.