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electrical:12v:psoc [2017/11/08 18:35]
frater_secessus created 		electrical:12v:psoc [2017/11/08 19:18]
frater_secessus [practical deep cycling]
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 ====== Partial State of Charge ====== ====== Partial State of Charge ======
  
 +//Partial state of charge// (PSoC) refers to the state of a lead-chemistry battery when it is left below 100%  State of Charge (partially [[electrical:depth_of_discharge|discharged]]).  Both long periods of PSoC and lower voltage are damaging to lead acid batteries (ie, [[electrical:batterycide|battery murder]]), usually due to "hard sulfation" (see [[#sulfation|below]]).
  
  
-//Partial state of charge// (PSoC) refers to the state of a lead-chemistry battery when it is left below 100%  State of Charge (partially [[electrical:depth_of_discharge|discharged]]).  Long periods of PSoC and lower voltages are damaging to lead acid batteries (ie, [[electrical:batterycide|battery murder]]).+===== optimal deep cycling ===== 
 + 
 +In a perfect world, lead-acid batteries (both flooded and AGM) would be discharged no further than 50% then [[electrical:12v:charging|fully charged]] again each day. 
 + 
 +It is easier to get the batteries fullly charged each day when [[electrical:solar:overpaneling#vs_battery_bank|they are overpaneled]], but that trades battery health for less reserve for [[electrical:solar:output#insolation|days of poor insolation]]. 
 + 
 + 
 +===== practical deep cycling ===== 
 + 
 +{{ http://www.coastalcoolaids.com/images/287_G31_JPEG_High_Resolution.jpg?150}}In practice, it may be "good enough" to get back 100% SoC every other day or even every third day. One should expect to get fewer duty cycles when getting back to 100% SoC less frequently. 
 + 
 +Some premium AGM like Lifeline, Northstar and Odyssey may be able to tolerate longer stretches of PSoC although capacity will be reduced up to 30% during those periods.((http://support.rollsbattery.com/support/solutions/articles/5964-battery-sulfation))((http://www.trawlerforum.com/forums/showpost.php?p=604465&postcount=32))  The only lead-acid battery proven to handle PSoC with minimal harm is the [[https://www.bruceschwab.com/advanced-energy-storage-systems/firefly-energys-oasis-group-31/|carbon-foam Oasis Firefly AGM]].((electrical:solar:output#insolation))  
 + 
 + 
 + 
 +===== sulfation ===== 
 + 
 +//Sulfation// is the conversion 
electrical/12v/psoc.txt · Last modified: 2022/05/06 12:14 by frater_secessus

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