B and C
Well-known member
Wish Sternwake was still around for this.
Something I have not seen addressed in solar charging is base loads connected to the battery, i.e. propane/co detectors that are always on as well as any other device that would constitute a load on the battery day and night.
I have a base load of 1.2 amps. My charge controller is a MPPT MidNite Kid with a WhizBang Jr. and a 500 amp shunt. I also have a Bogart Trimetric battery monitor that only shows me what is going on.
My battery negative is tied to the shunt and the other side of the shunt is chassis ground. All my loads are on chassis ground, nothing tied directly to the battery or the load terminals of the controller.
My question is end amps. If end amps are supposed to be 1.7(8) amps (1/2 C for my system (350AH AGM)) but I have a 1.2 amp base load, do I set end amps at 1.7 or 0.5?
I have it set at 1.7 currently and usually get to 100 % according to my Trimetric (also set at 350AH battery). Is this optimal and way off the mark? These are older telephone system batteries with no info on end amps. I got them when they were 5 years old and have been using them off an on for 4 years. I just have a gut feeling that I am under charging them.
I cannot seem to find on Google ('course I maybe I am not using the right search terms) anyone addressing this base load and end amps.
Something I have not seen addressed in solar charging is base loads connected to the battery, i.e. propane/co detectors that are always on as well as any other device that would constitute a load on the battery day and night.
I have a base load of 1.2 amps. My charge controller is a MPPT MidNite Kid with a WhizBang Jr. and a 500 amp shunt. I also have a Bogart Trimetric battery monitor that only shows me what is going on.
My battery negative is tied to the shunt and the other side of the shunt is chassis ground. All my loads are on chassis ground, nothing tied directly to the battery or the load terminals of the controller.
My question is end amps. If end amps are supposed to be 1.7(8) amps (1/2 C for my system (350AH AGM)) but I have a 1.2 amp base load, do I set end amps at 1.7 or 0.5?
I have it set at 1.7 currently and usually get to 100 % according to my Trimetric (also set at 350AH battery). Is this optimal and way off the mark? These are older telephone system batteries with no info on end amps. I got them when they were 5 years old and have been using them off an on for 4 years. I just have a gut feeling that I am under charging them.
I cannot seem to find on Google ('course I maybe I am not using the right search terms) anyone addressing this base load and end amps.