Bq24074 output voltage

I have just got a BQ24074 Li battery charger from a solar panel. I am wanting to charge batteries, which is okay, but I also need to keep an external 3-3.3V LED permanently lit from either the solar panel or the batteries or both.
I am not sure how to do this.
I don’t know much about electronics, just a little.
so when the sun goes down, I definitely want the cells to keep the LED lit.
Effectively the LED is lit 24/7.2021-10-09T23:00:00Z