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electrical:12v:alternator [2020/05/21 10:45] frater_secessus [Alternator charging] |
electrical:12v:alternator [2020/05/24 12:07] frater_secessus [gotchas] |
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- | Power from the alternator is shared with the house battery using an isolator of some sort. This allows the [[electrical: | + | Power from the alternator is shared with the house battery using an isolator |
==== constant-duty solenoid ==== | ==== constant-duty solenoid ==== | ||
Line 131: | Line 131: | ||
===== gotchas ===== | ===== gotchas ===== | ||
- | Alternator charging may bring some battery chemistries (like lithium) to unsuitably high voltages. | + | Alternator charging may bring some battery chemistries (like lithium) to **unsuitably high voltages**. A [[electrical: |
- | Idling the engine to run the alternator | + | **Idling the engine** to charge house batteries **can seriously overheat the alternator**. It is usually cooled by wind from the vehicle' |
+ | |||
+ | In early morning when house battery voltage is lowest, a plain solenoid may unintentionally allow depleted batteries to pull down the starter battery. | ||
==== wiring ==== | ==== wiring ==== |