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diy solar

diy solar

Testing the impossible (nr of cycles)

OK, I had to look it up. Take Temperature and age out of it and you are left with CYCLES and SOH to do your own match to figure out time left.


The SOC is normally calculated by the BMS using the voltage and current that are flowing into and out of the battery. The SOH, on the other hand, is often established based on elements like the quantity of charge/discharge cycles the battery has seen, its age, and its history of temperature.

The current mainstream SOH definition is from the capacity perspective, i.e., the ratio of the current maximum available capacity to the initial maximum capacity as the SOH evaluation index [6]. The formula is defined as follows: 1730551206191.png indicates the maximum available capacity of the current cycle and the maximum available capacity of the initial cycle. The initial SOH of the battery is 100 %, when the SOH of the battery declines to 70 % or 80 % or less, the battery is usually considered to have reached its end of life
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