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--- electrical:batterycide [2020/01/11 22:22]
frater_secessus [murdering flooded lead-acid]
+++ electrical:batterycide [2020/07/08 12:28]
frater_secessus [murdering lithium]
@@ Line 1: / Line 1: @@
+Words of Wisdom:
+> Over many years of capacity testing hundreds and hundreds of batteries, flooded, GEL and AGM I have yet to see a lead acid battery that could delivers its full storage potential at anything less than 0.75%((C/80)) in tail current at absorption voltage. MaineSail((https://marinehowto.com/how-fast-can-an-agm-battery-be-charged/))
 ====== Battery murder ======
@@ Line 28: / Line 33: @@
-  * overvoltage.  [[electrical:12v:lifepo4_batteries_thread|13.8v is a safe upper limit]] and will charge the bank completely.  Some experienced folk use slightly higher voltages for faster charging but it must be terminated quickly as the bank approaches 100% state of charge.
+  * overvoltage.  [[electrical:12v:lifepo4_batteries_thread|13.8v is a safe upper limit]] without BMS and will charge the bank completely.  Some experienced folk use slightly higher voltages for faster charging but it must be terminated quickly as the bank approaches 100% state of charge.  Exception:  Lithium banks with BMS typically overcharge intentionally to balance cells.  The overcharge is consumed by resistors and does not actually go into the cell.
   * long periods of 100% state of charge;  cease all charging at 100% and only charge that high if you know some loads will be applied immediately.  Lithium chemistries do not care about partial state of charge so use that to your advantage.
   * exposure to high heat

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