Solar help... Mppt or PWM

lawrosa wrote:
If there was a set time for abs wouldnt the amps taper anyway??

... when I got back home it was in float showing 3 amps or so.. So since I could not get it back into abs/mppt I turned up the volts on float from 13.6 to 14.5..

This increased the amps to 10-11 amps..

So IMO this should top off the batterys properly? I left it there until the amps once again went down to about 3 amps and put it back to 13.6..

Yes, if this controller could keep 14.8 for an hour or so, the current would taper by the end of this stage.

I "think" you could force it back into bulk/abs by switching it off and then on again, but it would only stay in Abs for a minute again. What you did - raising Float to 14.8, waiting for current to drop, and then lowering it to 13.6 - was better. Amps went up to 11 because controller was not given a chance to pump enough power into batteries earlier, because it only stayed at 14.8 for a minute.

What are you missing? Nothing. Except that controller needs human intervention every day. If you just leave it do its job it will do it so-so. And there is also temperature compensation issue. All voltages need to be adjusted when temperature changes from 77F, there is no easy way to do it with this controller.

13.6 Float might need tinkering. Some people found that - after spending enough time in Abs - the battery was "fuller" by the evening if Float was set a notch higher, 13.7 - even though the specs were 13.6. But this should be checked with SG.