So I have this little solar setup at the top of our farm. It runs about 120 watts of light for about an hour per daytime, but also 15 minuets during the evening.
I've added an extra panel because during the previous winter the demand couldn't be constantly met.
The extra panel has made a huge difference, and only needs 90 minutes of a decent bright day to keep fully charged.
The last four days have been far too dark and dim though, and it's dropped to 50%.
So how low could I let the percentage drop to before I take it off for a mains powered charge?
I've previously only let it get to 60%, but I actually have no idea why.
What do you experts think, could I let it get even lower than 50 %?
We like pictures, so here ya go...