How Long Do Solar Lights Last? How long do solar lights last on average? Most solar lights last between 3 and 5 years with average maintenance. Premium solar lights with lithium-ion or LiFePO4 batteries can last 5 to 10+ years. The LED bulbs typically outlast everything else at 25,000–50,000+ hours. How long do solar light batteries last before replacement? NiMH batteries last 1 to 3 years. Lithium-ion batteries last 2 to 4 years. LiFePO4 batteries last 5 to 8 years. Battery lifespan depends on charge cycles, temperature exposure, and discharge depth. Do solar lights work in winter? Yes, solar lights work in winter but with reduced performance. Shorter days mean less charging time, and cold temperatures decrease battery efficiency , especially in NiMH batteries. Premium solar lights with lithium batteries perform significantly better in cold weather. Why do my solar lights stop working after a few months? The most common reasons are: poor sunlight placement (shaded area), dirty solar panels reducing charge efficiency, or low-quality NiMH batteries that degrade quickly. Try repositioning for more sun, cleaning the panel, and replacing the battery. Can I replace the batteries in solar lights? Yes, most solar lights have replaceable batteries. Check your light's...