Solar street lights outdoors provide several benefits, including reduced electricity costs, lower environmental impact due to the use of renewable energy, ease of installation without the need for wiring, and the ability to operate in remote areas without access to power grids.

The batteries in solar street lights usually last between 3 to 5 years, depending on the quality of the battery, usage, and environmental conditions. Regular maintenance can help extend their lifespan.

Yes, solar street lights can work in cloudy weather, although their efficiency may be reduced. Most solar street lights are designed to store enough energy during sunny days to operate for several days even when sunlight is limited.

When choosing solar street lights, consider features such as brightness (lumens output), battery capacity, solar panel efficiency, durability (weather resistance), motion sensors for added security, and warranty or customer support.