How long do the lights stay on after a full charge?

Runtime depends on sun exposure and the charge controller. Expect several hours after a good sunny day, and noticeably less after overcast weather. Keep the panel facing direct sun for the best result.

Can these be left outside in the rain?

Yes, IP44 covers rain and splashes. They are not rated for submersion or prolonged heavy storms, so bring them in during extreme weather or if water pools around the panel.

Do they need an outlet or batteries?

No outlet is needed. The solar panel charges an internal battery during the day, and the lights switch on automatically at dusk on most sets. No disposable batteries are required.

How far does the 600-LED string reach?

600 LEDs on a typical fairy-light spacing cover a long run, enough for a fence line or several trees. Check the stated length on the box before planning a layout, since spacing varies by set.

Are they bright enough to light a patio?

They are decorative, not task lighting. They outline a patio or garden nicely but won't replace a porch light. For usable light, pair them with a dedicated outdoor fixture.