Differences

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--- electrical:solar:charge_controller [2022/04/30 17:21]
frater_secessus [specs]
+++ electrical:solar:charge_controller [2022/05/03 11:09] (current)
frater_secessus [how to choose] removed footnote, inlined the comment
@@ Line 107: / Line 107: @@
 **MPPT is effectively required** when:
-  * using panels with nominal voltages higher than 12v ((more precisely, when panel nominal voltage exceeds house bank nominal voltage)).   To be fair, [[http://mouse.mousetrap.net/blog/2021-07-09-solar-back-online-.html#pwm-spare-saved-my-bacon|one really can use higher-voltage panels with PWM and 12v banks]] -- they just end up running at about half power.
+  * using panels with nominal voltages higher than the battery bank voltage, like 24v panels with a 12v bank.   To be fair, [[http://mouse.mousetrap.net/blog/2021-07-09-solar-back-online-.html#pwm-spare-saved-my-bacon|one really can use higher-voltage panels with PWM and 12v banks]] -- they just end up running at about half power.
   * space available for panels is limited, as on a sailboat or small vehicle
   * daytime loads are hampered by [[electrical:solar:pwm_tweaking|PWM Vbatt hobbling]]

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