electrical:12v:alternator
Differences
This shows you the differences between two versions of the page.
Both sides previous revision
Previous revision
|
Next revision
Both sides next revision
|
electrical:12v:alternator [2021/04/03 13:16] frater_secessus [gotchas] |
electrical:12v:alternator [2021/04/03 13:18] frater_secessus [gotchas] |
* **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 isolator circuit is closed may [[opinion:frater_secessus:alternatorSolarStall|"stall" 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. |
* 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: 2024/05/09 14:00 by frater_secessus