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--- electrical:solar:charge_controller [2024/02/16 23:32]
frater_secessus [how to choose] added video
+++ electrical:solar:charge_controller [2024/04/16 20:28]
frater_secessus [specs]
@@ Line 32: / Line 32: @@
   * **12v/24v/48v** - this refers to the nominal voltage of the battery bank it will be charging.
   * **Maximum input voltage** - the highest voltage the controller should //ever// see from the solar array.((it is common to leave ~20% margin))  NOTE: a 50v input max does //not// mean a PWM controller can make efficient use of mismatched panel/battery voltages; that requires MPPT.  See [[#how_to_choose|how to choose]] below.
+  * **Minimum input voltage** - a PWM controller will requires panel voltage ≥ battery voltage to charge.  MPPT controllers will usually require a bit more voltage headroom to start/run the MPPT algorithm.((although less common, //boosting// MPPT do exist that can increase incoming voltage in order to charge a higher-voltage battery bank))

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