My TS-MPPT-45 controller manual says the following (summarized) about charge stages:
(Vabs = 14.7v, Vfloat = 13.5v for my flooded LA):
Bulk - full solar power until battery reaches Vabs
Absorption - The battery is allowed to come to full state of charge at the Vabs
Float - Vfloat low maintenance levels
1) Is the controller discarding power during the absorption phase? I mean it can only control either I or V - and the other follows, right?
2) Absorption confuses me a bit. Firstly because it just runs for a fixed time - not based on any sensors or anything. So how does it know it comes to a "full state of charge"? Is it that there's a typical SOC when bulk hits 14.7v and transitions to absorption? I realize it's triggered by 14.7v voltage, but is that usually 60% or 90% SOC?
(Vabs = 14.7v, Vfloat = 13.5v for my flooded LA):
Bulk - full solar power until battery reaches Vabs
Absorption - The battery is allowed to come to full state of charge at the Vabs
Float - Vfloat low maintenance levels
1) Is the controller discarding power during the absorption phase? I mean it can only control either I or V - and the other follows, right?
2) Absorption confuses me a bit. Firstly because it just runs for a fixed time - not based on any sensors or anything. So how does it know it comes to a "full state of charge"? Is it that there's a typical SOC when bulk hits 14.7v and transitions to absorption? I realize it's triggered by 14.7v voltage, but is that usually 60% or 90% SOC?
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