Understanding LED lifespan: How long do - Regency …
"Rated lumen-maintenance life is measured in hours with associated percentage of light output, noted as Lp. In other words, L70 of 30,000 hours means that the tested LEDs produce 70% of the initial light output at 30,000 hours. If an LED has L50 of 30,000 hours, its lumen output decays faster than one with L70 of 30,000 hours."
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Troubleshooting Outdoor Solar Lights | DoItYourself.com
This could be due to the proximity of a street light or lighting from the house. The way to test this is by putting your hand or something opaque over the photocell which is on the top of the light. If the outdoor solar light comes on with no problem, the location is probably the problem and you’ll need to move the light to a place where it
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