Do these need direct sunlight to work?

Yes. The panel on each light needs several hours of direct sun to charge the battery for the evening. In heavy shade they will run dim or not at all.

How long do they stay lit at night?

Fully charged on a sunny day, they typically run for several hours after dusk. Expect shorter runtimes in winter or on cloudy days.

Can I replace the batteries?

The lights use small rechargeable cells inside the housing. Some owners open the unit to swap them, but the housing is not designed for easy replacement.

Are they bright enough to light a walkway?

They mark a path rather than light it. The output is low, so steps and trip hazards are better lit by a mains-powered fixture.

How far apart should I space them?

Space them roughly 4 to 6 feet apart along a path or bed edge. Closer spacing helps because each light covers a small pool of ground.

Are they safe in rain and snow?

They are made for outdoor use and handle normal rain, but owners report water getting inside after heavy storms. In deep snow, pull them or the stakes may crack.