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electrical:solar:nonessential [2023/10/18 19:04]
frater_secessus [when to run opportunity loads] 		electrical:solar:nonessential [2023/10/18 19:08] (current)
frater_secessus [when to run opportunity loads]
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 ===== when to run opportunity loads ===== ===== when to run opportunity loads =====
  
-The optimal time to run loads is when there is **power available in excess of battery charging requirements**.  +The optimal time to run loads is when there is **power available in excess of battery charging requirements**.  When done at the right time, the loads are effectively run [[electrical:solar:offthepanel|off the panels]] rather than off the battery bank.  This results in the bank having a higher state of charge both at sundown and morning.  
  
 With **lead** this means **during Float**, or **in late Absorption** when charge current acceptance has fallen enough that the system can run the loads //and still maintain the Absorption voltage setpoint//.   With **lead** this means **during Float**, or **in late Absorption** when charge current acceptance has fallen enough that the system can run the loads //and still maintain the Absorption voltage setpoint//.  
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 There is a little more wiggle room with [[electrical:12v:deep_cycle_battery#lithium_chemistries|LiFePO4]];  the loads can be run with no net negative effect on a Lithium system when There is a little more wiggle room with [[electrical:12v:deep_cycle_battery#lithium_chemistries|LiFePO4]];  the loads can be run with no net negative effect on a Lithium system when
  
-  * the bank has reached the intended charge state +  * the bank has reached the intended charge state; or 
-  * or any time the bank can be //projected// to reach the intended charge state by sundown while carrying the extra loads. In effect, lithium allows you to "borrow" against future charging without penalty..   Exception:  Lithium setups with PWM [[electrical:solar:charge_controller|solar charge controllers]] will make [[electrical:solar:pwm_tweaking|most power]] when bank voltage is highest.  So waiting for Float or Absorption to run opportunity loads will mean the solar can make more Wh per day.+  * any time the bank can be //projected// to reach the intended charge state by sundown while carrying the extra loads. In effect, lithium allows you to "borrow" against future charging without penalty..   Exception:  Lithium setups with PWM [[electrical:solar:charge_controller|solar charge controllers]] will make [[electrical:solar:pwm_tweaking|most power]] when bank voltage is highest.  So waiting for Float or Absorption to run opportunity loads will mean the solar can make more Wh per day.
  
  
electrical/solar/nonessential.1697670290.txt.gz · Last modified: 2023/10/18 19:04 by frater_secessus

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