Bought 3 all blown on first click, something is wrong here, I checked the voltage of the batteries I used, they were 2 tenergy batteries of 3.2 volts. Then I checked 2 123a lithium batteries, they were 3.4 volts, then I checked 3 flood light batteries and they were 3.3 volts. All three bulbs burned out when turned on. If all batteries fall within the prescribed voltage range, the over-voltage situation will be eliminated. This leaves a manufacturing defect. Either they changed the materialsโฆ