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australia:dcdccharging [2026/11/04 04:02] – [Introduction] gary1australia:dcdccharging [2026/11/04 04:02] (current) – gary1
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   * **a 25A charger will suffice for batteries up to 200Ah, however a 40-50A charger will be best for 100-300Ah batteries**   * **a 25A charger will suffice for batteries up to 200Ah, however a 40-50A charger will be best for 100-300Ah batteries**
   * these require professional level wiring from your car battery to the DC-DC charger - and this should be near your auxiliary battery so you don't lose charge voltage   * these require professional level wiring from your car battery to the DC-DC charger - and this should be near your auxiliary battery so you don't lose charge voltage
 +
 +
 +<note warning>
 +  ***do not use a AC-DC or solar charger directly onto your main car battery while it is connected to a DC-DC charger and a partly full auxiliary battery**
 +    * the DC-DC charger will detect the voltage of the main battery charger and commence charging your auxiliary battery potentially at a rate higher than the charger to the main battery can provide, and this will result in your main battery going flat!
 +    * also **if your DC-DC charger is connected to your vehicle ignition cable, don't leave your key in the ON position without vehicle running as this may drain your main battery**
 +    * see [[https://www.youtube.com/watch?v=rDXixCzg6iw]]
 +</note>
 +
 +
 +<note warning>
 +  ***high current DC-DC chargers (eg. 100A) can only be used with high‑output alternators (12V – 180A+)**
 +    * eg.  large 4WDs, utes, trucks, etc
 +  ***lower current DC-DC chargers (eg. 50A or less) can generally be used in most non-EV vehicles**
 +</note> 
 +
  
 <note tip> <note tip>
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   *see also [[https://www.youtube.com/watch?v=GaOc9Gx4CqA]]   *see also [[https://www.youtube.com/watch?v=GaOc9Gx4CqA]]
 </note> </note>
- 
-<note warning> 
-  ***do not use a AC-DC or solar charger directly onto your main car battery while it is connected to a DC-DC charger and a partly full auxiliary battery** 
-    * the DC-DC charger will detect the voltage of the main battery charger and commence charging your auxiliary battery potentially at a rate higher than the charger to the main battery can provide, and this will result in your main battery going flat! 
-    * also **if your DC-DC charger is connected to your vehicle ignition cable, don't leave your key in the ON position without vehicle running as this may drain your main battery** 
-    * see [[https://www.youtube.com/watch?v=rDXixCzg6iw]] 
-</note> 
- 
- 
-<note warning> 
-  ***high current DC-DC chargers (eg. 100A) can only be used with high‑output alternators (12V – 180A+)** 
-    * eg.  large 4WDs, utes, trucks, etc 
-  ***lower current DC-DC chargers (eg. 50A or less) can generally be used in most non-EV vehicles** 
-</note>  
  
  
australia/dcdccharging.txt · Last modified: by gary1

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