A charging cycle means that all the charge of a battery goes from full to empty, and then from empty to full, which is not the same as a single charge.
A lithium-ion battery, for example, uses only half its capacity on the first day, and then recharges it. If it's still the same the next day, use half of the charge, and two total charges count as one charge cycle, not two.
As a result, it may normally take several charges to complete a cycle. With each charge cycle, the capacity of the battery decreases a little.
Life span and influencing factors
The normal use of lithium iron phosphate battery should carry out partial discharge, rather than complete discharge, and try to avoid frequent complete discharge. Once the battery is off the production line, the clock starts ticking. Whether used or not, lithium-ion batteries last only a few years.
The decrease in battery capacity is due to an increase in internal resistance caused by oxidation (which is the main cause of the decrease in battery capacity). Eventually, the cell's resistance reaches a point where, although the cell is fully charged, it cannot release the stored charge.
The service life of lithium iron phosphate battery is affected by ambient temperature and charging state.
The batteries are fully charged (i.e., 100% charged) and then stored at ambient temperatures of 0℃, 20℃, 40℃ and 60℃ for one year to measure the percentage of the battery capacity in the initial capacity.
A battery pack is stored in a full state and its life decays quickly.
The higher the storage temperature of a battery string is, the faster its service life decreases. When the temperature exceeds 40℃, the service life will decay rapidly.
At high charge and high temperature storage, life decay is rapid and can only be stored for less than three months.
Therefore, to ensure the service life of lithium iron phosphate for 5 years, the battery is used at 0℃-40℃, while avoiding the phenomenon of overcharge and overdischarge of the battery. Front-end camera peak power consumption: ≤12W; Online acquisition power consumption: ≤3.5W; Static power consumption online: ≤0.5W As long as the battery ≥20AH, according to the southern cloudy day rainy day calculation, generally in 3 days or so the battery may appear too put phenomenon, that is a using cycle.
Possible for 3 to 4 times a month, is three to four cycles, 56 times a year cycles, 5 years 280 cycles, fully consider the environmental temperature, charging current, charging voltage, discharge cut-off voltage, use, store the charged state, store the environmental factors such as temperature, charging mode, lithium iron phosphate batteries can be used for five years.