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electrical:solar:shallow_cycling

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electrical:solar:shallow_cycling [2018/06/16 20:54]
frater_secessus [how it works]
electrical:solar:shallow_cycling [2020/01/14 15:49]
frater_secessus [effect on starter battery]
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   - the controller's LOAD output disconnects (LVD) at 100% SoC (~12.7v)   - the controller's LOAD output disconnects (LVD) at 100% SoC (~12.7v)
   - the controller's LOAD output //re//connects (LVR) at ~13.0v);  see discussion below   - the controller's LOAD output //re//connects (LVR) at ~13.0v);  see discussion below
-  - power is //only// taken from the controller's LOAD output;((or from a circuit control by a relay on the LOAD output)) this ensures the starter battery is never discharged below the intended setpoint+  - power is //only// taken from the controller's LOAD output;((or from a circuit control by a relay on the LOAD output)) this ensures the starter battery is never discharged below [[electrical:12v:lvd|the intended setpoint]]
  
 === Low Voltage Reconnect (LVR) setpoint === === Low Voltage Reconnect (LVR) setpoint ===
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 +Anecdote:  TreborEnglish runs his 75A flooded 12v wally world deep cycle to 87% SoC regularly and it has lasted 3 years as of this writing.  He reports it requires 20-30ml of water/month.((https://www.reddit.com/r/vandwellers/comments/enwq70/best_car_battery_for_van_life/fe670is/))
  
 +==== sample build ====
 +
 +  * 100w poly((for least expensive and best performance with [[electrical:solar:shunt_tweaking|shunt]]/[[electrical:solar:pwm_tweaking|pwm [[electrical:solar:charge_controller|controllers]]]])) panel on the roof, either a rack-mounted framed panel or a flex panel adhered to the surface.
 +  * [[https://amzn.to/2ToGWyX|cable gland]] for getting wires through roof
 +  * panel wires runs down the vehicle A-pillar inside the passenger area -- can be on driver or passenger side depending on where starter battery is located
 +  * wires run to a [[electrical:solar:shunt_tweaking|$10 shunt]] solar [[electrical:solar:charge_controller|charge controller]]
 +  * controller's BATTERY wires run from the controller to the starter battery.
 +  * controller's LOAD wires run to outlet, power bus, etc 
  
electrical/solar/shallow_cycling.txt ยท Last modified: 2023/04/08 13:41 by frater_secessus