It has been several days since charged up my Bluetti solar charger and I’ve used it a lot to keep the laptop, tablet, and phone topped off and I’ve run my USB fan all night long for three nights in a row. That doesn’t use hardly any power and shows little drainage of the unit. But today it was showing just a 10% charge. It’s a hot, sunny day here in VA so I pulled out the 160-watt, flexible solar panel and hooked it into the Bluetti for the first time. Well, actually the first time to use it for charging. I’d hooked it up when I was in the swamp to see if it worked. Right now, just before noon, it’s showing the panel pumping 11.8 watts into the Bluetti battery. I’m happy with it.