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--- electrical:12v:multipoint_charging [2022/05/25 12:30]
frater_secessus [how to make them cooperate]
+++ electrical:12v:multipoint_charging [2024/03/29 18:55] (current)
frater_secessus [gotchas]
@@ Line 63: / Line 63: @@
 Some of these are observed, and some are theoretical.
-  * the vagaries of voltage sag across the system may result in the various charging sources seeing slightly different voltages.  Voltage Sense wires can help with this issue.
+  * the vagaries of voltage sag across the system may result in the various charging sources seeing slightly different voltages and therefore contributing in unpredictable ways.((probably a non-issue as long as the bank is getting properly charged))  Voltage Sense wires can help with this issue.
-  * Multiple controllers set up to trigger Float from endAmps((trailing amps)) may enter float early since they are providing only some of the charging current.
+  * Multiple non-communicating controllers set up to trigger Float from endAmps((trailing amps)) may enter float early since they are providing only some of the charging current.
-  * Multiple sources may inadvertently exceed the bank's recommended charging current
+  * Multiple sources may inadvertently exceed the bank's recommended charging current, or your preferred current.  Example:  a lithium battery wants 50A max but each charging source can make 30A.  This might result in overcurrent (60A) during Bulk.
-  * theoretical:  low-frequency PWM controllers in parallel with MPPT controllers may confuse the MPPT with a varying Vbatt reference.
+  * theoretical:  low-frequency PWM controllers in parallel with MPPT controllers may confuse the latter with an unstable reference voltage.
+  * some systems may throw a warning if chassis voltage > alternator output voltage((https://www.cruisersforum.com/forums/f14/alternator-solar-panel-conflict-233083.html))

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