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electrical:solar:status

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electrical:solar:status [2023/11/19 17:15]
frater_secessus [setups with no float] 		electrical:solar:status [2024/01/14 15:32]
frater_secessus [setups with no float]
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 Configurations with no float ("charge and stop", found on some Lithium profiles) will  Configurations with no float ("charge and stop", found on some Lithium profiles) will 
  
-  - charge to the Absorption ("boost") setpoint+  - charge to the Absorption ("boost") setpoint((with or without some amount of Absorption duration))
   - **stop charging**   - **stop charging**
   - until voltage falls to the rebulk ("reboost", "boost return voltage") setpoint   - until voltage falls to the rebulk ("reboost", "boost return voltage") setpoint
   - repeat   - repeat
  
-The fall to reBulk looks like the transition to Vfloat described above. In both cases the controller makes no (or practically no) power until the lower setpoint is reached. +The fall to reBulk looks like the transition to Vfloat [[electrical:solar:status#transitioning_to_float|described above]]. In both cases the controller makes no (or practically no) power until the lower setpoint is reached.  
 + 
 +A constant cycling 14.4v->13.2v->14.4v might seem extreme but in practice there is little actual cycling occurring.  A fully-charged 4S LFP with no loads will rest somewhere around **13.6v**. So for actual SoC changes we are talking about the difference between 13.6v and 13.2v.  With significant loads applied 13.2v observed could mean SoC as high as 90% and with trivial loads as low as 70%.((with trivial loads there might be only 1 cycle a day since voltage would not fall to reBoost))  In normal use the real cycling might be 100%->85%-100% and the solar is helping carry the loads during charging periods.   
  
 === Renogy confusion === === Renogy confusion ===
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     * the manual does not state the 13.2v boost return setpoint [an egregious error - secessus]     * the manual does not state the 13.2v boost return setpoint [an egregious error - secessus]
  
-Users uncomfortable with this behavior can set up the USER profile to meet their needs, including defining [[electrical:12v:drop-in_lifepo4#mythyou_shouldn_t_float_lithium|a quasi-Float setpoint]]. +Users uncomfortable with this behavior can set up the USER profile to meet their needs, including defining [[electrical:12v:drop-in_lifepo4#mythyou_shouldn_t_float_lithium|a quasi-Float setpoint]].((low temp charging cutoff, when available, may only be available in canned Li profiles))
  
  
electrical/solar/status.txt · Last modified: 2024/06/05 16:37 by frater_secessus

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