I recently got a 1000w solar generator and 2 180w panels. I noticed a few things.

1. At night..when I charge with nepa..it takes forever to charge well. Infact the bars doesn't move but from 7am..it starts charging well and gets full fast within 3-4 hours.

2. When I use nepa to charge and it gets full 100%..if nepa takes light and I change over to solar..the bars drop to 80 or 60%.

Please I need advise how I can optimize the solar generator.

I attached the pic