Magnum MS2812 'Absorb Done' settings
Hi All, I've my replacement X's 4 Lifeline L16's installed in the coach. Lifeline has been just top notch to work with during this adventure. And are doing sort of a post mortem on my old bank ...
Forum Discussion
Smitty77 wrote:
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So 3 hrs Absorb End Time - 2 hrs 15 mins = 45 Mins early termination of Absorb cycle? (THAT IS WHAT CONFUSED ME. And why I started thinking Absorb End of 4 Amps might be the better way to go...).
Fun, fun...
Smitty
MI have a Magnum MMS-1012 and have observed similar behavior. Mine has a fixed 4hr ABS but it also shuts ABS down early like yours. Apparently the timer is a secondary method of shutting ABS off so you don't have a runaway ABS stage.
My biggest problem is that the ABS stage is only available when first powered up. After that, it is stuck in Float at 13.6. Worse yet, after the 4hrs Float it goes into standby mode. In standby, it waits for the Volts to drop below 12.9V and then it repeats Float again.
This is irksome because sometimes I need the 50A for bulk/abs charging but the solar has already raised the Volts above 12.9V. At this point, even if I restart the MMS, it goes straight to Float. I can't force 14.4V! If I need the 50A I must start the MMS early AM or late PM when I can catch the bank below 12.9V.
In contrast, the SS MPPT 15L solar controller will cycle through bulk/abs/float every day. Plus, I can restart it at will during the day and it will go through a complete cycle again.
HTH;
John
