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--- electrical:12v:b2b [2025/04/28 20:46]
frater_secessus [Renogy]
+++ electrical:12v:b2b [2025/04/28 20:55] (current)
frater_secessus [Renogy]
@@ Line 144: / Line 144: @@
 This device's behavior regarding solar+alternator charging is widely misunderstood.
-The 50A dual-input charger prefers to charge by solar if possible, up to **50A**.  If it cannot meet charging demands alone and the engine is running it will will charge up to **25A by solar and 25A by alternator**:
+The 50A dual-input charger prefers to charge by solar if possible, up to **50A**.  If it cannot meet charging demands alone and the engine is running it will will charge **≤25A by solar** plus **≤25A by alternator**:
 Consider this snippet from the manual;
@@ Line 163: / Line 163: @@
 Note:  some have reported better alternator charging performance with the D+ (smart alternator) wire connected, even with plain alternators.  Oversizing cables from the alternator may also help. ((https://www.youtube.com/watch?v=LtIe2rIfpW8))
-== disconnecting the solar ==
+== preventing solar from hobbling the alternator side  ==
-Because of the behavior described above, people who want maximum alternator charging sometimes add a way to disconnect solar panels.  This is typically done by adding some kind of disconnect on the panel POS wire going to the solar charge controller:
+Because of the behavior described above, people who want maximal charging can approach the problem one of two ways:
+**Max out the solar side** so it's never failing to make it's fair share.  This would be 400w of panel on the 30A and ~600w on the 50A.
+**Add a way to disconnect solar panels**.  This is typically done by adding some kind of disconnect on the panel POS wire going to the solar charge controller:
   * manual switch

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