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electrical:solar:charge_controller_setpoints

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electrical:solar:charge_controller_setpoints [2020/05/23 14:41]
frater_secessus [charging setpoints]
electrical:solar:charge_controller_setpoints [2023/07/21 23:15] (current)
frater_secessus [charging setpoints]
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 Less common setpoints: Less common setpoints:
   * **Absorption duration** - the amount of time Vabs will be held until dropping to Vfloat.  May be used instead of or in addition to any endAmps above.  endAmps is more precise but can be tricky to measure, as [[electrical:12v:loads|loads]] or [[electrical:12v:multipoint_charging|multiple controllers]] can obscure the true level of current being accepted by the battery.   * **Absorption duration** - the amount of time Vabs will be held until dropping to Vfloat.  May be used instead of or in addition to any endAmps above.  endAmps is more precise but can be tricky to measure, as [[electrical:12v:loads|loads]] or [[electrical:12v:multipoint_charging|multiple controllers]] can obscure the true level of current being accepted by the battery.
-  * **Absorption restart** - voltage (or duration) at which Absorption stage after failing to maintain Vfloat+  * **Absorption restart** - voltage (or duration) at which Absorption stage after failing to maintain Vfloat.  Sometimes called //rebulk// or //reboost//.
   * **Equalization duration** - the amount of time the controller will hold Vequal.   * **Equalization duration** - the amount of time the controller will hold Vequal.
 +  * **Equalization frequency** - the number of days between equalization.  30 days is typical. 
 ===== load setpoints ===== ===== load setpoints =====
 Only present on controllers with LOAD outputs. Only present on controllers with LOAD outputs.
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 ===== non-setpoint settings ===== ===== non-setpoint settings =====
  
-  * **Maximum charge rate:**  While maximum charge rates normally are immaterial to solar charging((lead batteries accept what they want rather than taking what they are given)), Trojan specfies a maximum of [[electrical:12v:battery_capacity|C]]/5, or 1/5th of the battery's capacity in Ah.  +  * **Maximum charge rate:**  While maximum charge rates normally are immaterial to solar charging((lead batteries accept what they want rather than taking what they are given)), Trojan specfies a maximum of [[electrical:12v:battery_capacity|C]]/5, or 1/5th of the battery's capacity in Ah for this flooded example C/3 is a common max for AGM.  Lithium max charge is typically stated as C/2 for maximum life.   
-  * **Minimum charge rate:**  not stated in our example, but typical minimum charging values are ~C/10 for lead chemistries+  * **Minimum charge rate:**  not stated in our example, but typical minimum charging values are ~C/10 for flooded lead batteries, and ~C/5 for AGM. Lithium does not have a practical minimum rate so is not damaged by weak charging.
  
  
electrical/solar/charge_controller_setpoints.1590259282.txt.gz · Last modified: 2020/10/11 19:48 (external edit)