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--- electrical:solar:charge_controller [2020/05/25 11:55]
frater_secessus [how to choose]
+++ electrical:solar:charge_controller [2020/05/25 12:02]
frater_secessus [how to choose]
@@ Line 70: / Line 70: @@
   * the increase in cost is not an undue burden
-**Shunt controllers are useful for [[electrical:solar:shallow_cycling|shallow-cycling configurations]]** or for battery chemistries that are not damaged by [[electrical:depth_of_discharge|partial state of charge (PSoC)]].  Their relative inexpense makes them useful for even very small systems and test configurations.
+**Shunt controllers** are extremely inexpensive, making them useful for even very small systems, test configurations, and backups.
-Their simple ON and OFF setpoints may also make them useful for charging [[electrical:12v:deep_cycle_battery#lithium_chemistries|lithium]] chemistries.
+Shunts with a configurable charge setpoint((effectively Vabs)) will likely charge deeply cycled batteries better than a more $$$ PWM controller that lacks configuratble setpoints.   See [[electrical:solar:shunt_tweaking|shunt tweaking]].
+  * [[electrical:solar:shallow_cycling|shallow-cycling configurations]]
+  * battery chemistries that are not damaged by [[electrical:depth_of_discharge|partial state of charge (PSoC)]].
+  * Their simple ON and OFF setpoints may also make them useful for charging [[electrical:12v:deep_cycle_battery#lithium_chemistries|lithium]] chemistries.
 ===== multiple charge controllers  =====

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