The helmet will momentary darken when first tuned on than no response. In he past, after prolonged storage in the cabinet, it had to exposed to the arc or left in bright light to start working normally. The helmet has a series of solar cells in front to charge from the arc, two light sensors and circuit board.. Also contains two cr2335 batteries. From what I can learn, these batteries are not considered rechargeable. So want is going on? Do the solar cell just extend the battery life?