Thx, so the SOC will be 75%, I’m looking for 60%-65%.
With many rechargeable battery chemistries, taking cells "dead" is damaging... But what usually causes more issue is the "reverse charging" of cells (instead of +/- 2 volts per cell, batteries change to -/+ voltage and begin to "reverse charge". And an issue is that most series connected cells (in a battery) do not match state of charge exactly... You may have most cells at 10-20% State of Charge, and a weak cell or two at zero% or "negative" state of charge. Those reversed charged cells are usually "killed" and will need to be replaced.That is why I (we) suggest that you should not plan on taking a lead acid battery below ~20% state of charge--Just in case there are one or more weak cells in the string. EQ charging is used to bring all cells to 100% state of charge for FLA batteries (EQ is controlled over charging of some cells to bring up weak...-Bill
How does one determine if they have a reversed polarity cell?