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--- electrical:12v:charging [2020/01/13 11:00]
frater_secessus [temperature compensation]
+++ electrical:12v:charging [2020/05/13 12:17]
frater_secessus [charging while using the 12v system]
@@ Line 39: / Line 39: @@
 In practice absorption takes longer when the battery has been discharged deeply and shorter when it has not.((http://www.cheaprvliving.com/forums/Thread-Can-a-solar-panel-and-charge-controller-over-charge-a-battery?pid=96965#pid96965))
+**Mythbuster:** although it is commonly said that Vabs is attained at ~80% capacity...
+> charge current affects the SOC transition point from bulk to absorption charging - MaineSail((https://marinehowto.com/how-fast-can-an-agm-battery-be-charged/))
+MaineSail found that
+  * charging AGM at C/2.5 (max rate) resulted in the battery being 63.3% "full" at Vabs and being fully charged in **5hrs, 30 minutes**
+  * charging AGM at C/5 (min rate) resulted in the battery being 77.4% "full" at Vabs and being fully charged in **5hrs, 42 minutes**
 Some controllers will allow the user to configure the time or ratio of capacity/current (C///n//).  Sternwake says:
@@ Line 149: / Line 160: @@
 **Manual chargers** will not be affected by load as they are controlled by the user.
+===== battery voltage while charging =====
+Battery Voltage = Battery Voc((resting voltage)) + (Charge Current x Ri((internal resistance)))

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