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--- electrical:12v:power_mix [2023/11/19 12:25]
frater_secessus [alternator]
+++ electrical:12v:power_mix [2024/06/02 20:59]
frater_secessus [alternator]
@@ Line 19: / Line 19: @@
   * mandatory if you have a "smart" (variable voltage) alternator, common in Europe on recent models
   * mandatory if you have a large house bank (of any chemistry) compared to [[electrical:12v:alternator_details#current|your alternator's output rating]]
-  * suggested if you want a more predictable charge rate
+  * suggested if you want a more predictable charge rate;  DC-DC charge rates are typically consistent all the way through Bulk stage, no matter what the bank voltage is.
   * suggested if you want more of a hands-off approach
-DC-DC charging tends to have the same current output all through Bulk stage, no matter what the bank voltage is.
 **Alternator-only charging** [[electrical:12v:mandatory_solar|can work with lithium banks]] but for technical reasons solar or shore-power charging is usually required with lead batteries.
+==== the ciggy port ====
+{{ https://www.motorbiscuit.com/wp-content/uploads/2022/07/A-typical-12-volt-car-power-outlet-socket.jpg?125}}
+The vehicle's factory 12v outlet ("cigarette lighter") is typically fused at 10A.    This means it can provide ~120w of power before the fuse pops (12v x 10A = 120w).   This is much lower than the power a normal [[electrical:12v:alternator|alternator charging setup]] or [[electrical:12v:b2b|DC-DC charger]] can provide.  This makes it important to charge something every moment the engine is running, as close to 120w as possible.  To paraphrase [[https://en.wikipedia.org/wiki/Glengarry_Glen_Ross_%28film%29|Glengarry Glen Ross]]:  "ABC. A, //always//.  B,  //be//. C, //charging//."
+For example, if you have two
+Still, it's present on most cars so no installation is required.
@@ Line 51: / Line 59: @@
-**Consider mounted solar as a backbone of your charging if you spend a lot of time emplaced in areas of shade adjacent to areas with clear sun**.  In a forest with canopy openings, for example.
+**Consider portable solar as a backbone of your charging if you spend a lot of time emplaced in areas of shade adjacent to areas with clear sun**.  In a forest with canopy openings, for example.
@@ Line 57: / Line 65: @@
   * works well - when set out in the sun, especially when tilted toward the sun.
   * works poorly - when not deployed, like for people who move a lot or who do not diligently set up / take down the portables.
+One way to **predict if you will reliably set up the portables**:  how full is your vehicle's gas tank and your phone battery right now?  If you are a "never let it get low" type you will likely set out portables consistently.  If you are a "always running on [E]mpty" type you are less likely to set out the portables. This is a not a moral judgement, but rather a way to help assess whether or not portables would be a good source of power for your use case.

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