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electrical:12v:alternator [2021/06/16 16:35]
frater_secessus [Alternator charging] 		electrical:12v:alternator [2021/06/25 13:09]
frater_secessus [gotchas] victron ct
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   * **Idling the engine** to charge house batteries **can overheat the alternator**,particularly older-style ones that do not reduce output to control high temps.  Workaround: Don't plan to idle to charge from alternator.  If you do, a fan may help cool the alternator.     * **Idling the engine** to charge house batteries **can overheat the alternator**,particularly older-style ones that do not reduce output to control high temps.  Workaround: Don't plan to idle to charge from alternator.  If you do, a fan may help cool the alternator.  
   * In early morning when house battery voltage is lowest, **a plain solenoid may unintentionally allow depleted batteries to pull down the starter battery**.  Workarounds:  use a VSR, or start the vehicle immediately after inserting the key((ie, do not leave in the Accessory position which would drain the starter battery)).     * In early morning when house battery voltage is lowest, **a plain solenoid may unintentionally allow depleted batteries to pull down the starter battery**.  Workarounds:  use a VSR, or start the vehicle immediately after inserting the key((ie, do not leave in the Accessory position which would drain the starter battery)).  
-  * Solar charging while the engine is running may [[opinion:frater_secessus:alternatorSolarStall|get "stuck" at alternator voltage]].  Workaround:  higher solar wattage, DC-DC charger, or a switch to disconnect isolator after alternator voltage is reached.+  * Solar charging while the engine is running may [[opinion:frater_secessus:alternatorSolarStall|get "stuck" at alternator voltage]].  Workaround:  higher solar wattage, DC-DC charger, or a switch to disconnect isolator after alternator voltage is reached.  The [[https://amzn.to/3h5iMUd|Victron Cyrix-ct isolator]] could be useful here, as it appears to disconnect >13.8v.((https://www.victronenergy.com/upload/documents/Datasheet-Cyrix-ct-120A-230A-EN.pdf))
   * Alternator charging may bring some battery chemistries (like bare lithium cells with no BMS) to **unsuitably high voltages**.  Workarounds:  A [[electrical:12v:hvd|high voltage disconnect]] can [[electrical:12v:alternator charging hvd|restrict alternator charging to lower voltages]].  [[electrical:12v:b2b|DC-DC chargers]] can also regulate voltage provided to the house battery.    * Alternator charging may bring some battery chemistries (like bare lithium cells with no BMS) to **unsuitably high voltages**.  Workarounds:  A [[electrical:12v:hvd|high voltage disconnect]] can [[electrical:12v:alternator charging hvd|restrict alternator charging to lower voltages]].  [[electrical:12v:b2b|DC-DC chargers]] can also regulate voltage provided to the house battery. 
  
electrical/12v/alternator.txt ยท Last modified: 2024/04/26 17:11 by frater_secessus

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