Note that regulation of a solar charger is usually in the ground line. Meaning, solar(-) is not the same as battery(-). There can be several volt between batt(-) and solar(-). Panel(-) is negative during the day, and positive during the night. I think only three things are important.
- solar panel current
- load current
- battery voltage
Panel voltage is meaningless.
You could fry the ADS when any input voltage gets outside it's supply/GND.
Leo..