LiFePO4 Voltage Chart?

sajjen said:

As in a voltage vs SoC table? Such a table only makes sense if the cells are well rested. During charge, it means nothing.

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All tables are for reference.

The forest we are in is battery charging.

The tree we are looking at is a used Lifepo4 tree.

In the forest of battery charging all batteries charge to match the voltage they are presented with, at the amperage they can absorb. The voltage potential (difference in battery and source of voltage) is all that there is.

What ever you decide the top limit to be is the decision to make. There is brand new limit, and of course there is everything else, which is determined by any number of unlimited factors. Only a brand new lifepo4 battery will get to use a brand new factory table, everything else is less.

Most lifepo4 cells come with cycle 0% to 100% warranties. As soon as you operate those cells in the 20% to 80% range their longevity becomes all but irrelevant, ie nearly infinite cycles are possible. Furthermore, by operating a lifepo4 battery, within the 20%-80% a cycle is never even actually recording as even happening.

I have operated 30 days straight and "cycled" twice a day in the 20%-80% range of the new table, and not even one recorded cycle completed by the bms. The usage AH from the day to day shows a discharge of about 45 to 55 AH @ 48v setup. The bms registers that the SOC goes from 92% to 86%. That's when telling the bms that the battery is 800 AH and 48v setup. The actual physical battery is 260 Ah though.

All tables are for reference.The forest we are in is battery charging.The tree we are looking at is a used Lifepo4 tree.In the forest of battery charging all batteries charge to match the voltage they are presented with, at the amperage they can absorb. The voltage potential (difference in battery and source of voltage) is all that there is.What ever you decide the top limit to be is the decision to make. There is brand new limit, and of course there is everything else, which is determined by any number of unlimited factors. Only a brand new lifepo4 battery will get to use a brand new factory table, everything else is less.Most lifepo4 cells come with cycle 0% to 100% warranties. As soon as you operate those cells in the 20% to 80% range their longevity becomes all but irrelevant, ie nearly infinite cycles are possible. Furthermore, by operating a lifepo4 battery, within the 20%-80% a cycle is never even actually recording as even happening.I have operated 30 days straight and "cycled" twice a day in the 20%-80% range of the new table, and not even one recorded cycle completed by the bms. The usage AH from the day to day shows a discharge of about 45 to 55 AH @ 48v setup. The bms registers that the SOC goes from 92% to 86%. That's when telling the bms that the battery is 800 AH and 48v setup. The actual physical battery is 260 Ah though.

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