DannyB
Well-Known Member
As part of my annual checks I check the replacement date on the lights, one of the jackets is a Spinlock one with a pylon light which has a test button. The expiration date is still eighteen months away but the test LED turned red, which is bad. On the second test there wasn't enough power to light the test LED, although the light itself still worked. I will replace the pylon light but it started me thinking about the other ones, the pylon light claims the test button indicates the light has a ten hour operating life, but other lights presumably just prove the battery has enough power to light the lamp for a couple of seconds. I've always assumed that the expiration date on these things would have a factor of safety, but now I'm starting to wonder.