freezing electrical equipment

This is just a quick note. Several years ago, a lab I was in had a hard drive crash that contained valuable data. We took the drive to the electronics shop on campus and they put the drive in the freezer and were able to get our data off it because the drive would work after freezing until it warmed up. Several weeks ago, I took part in a 24hr race that was a very cold, wet and muddy experience. I had a light for night riding, but hadn't used it in ~7 months. When I went to charge my battery before the race, the battery wouldn't charge. Luckily, I was able to borrow a lighting system from a friend, but I was bummed that my battery didn't work - largely because they're so expensive. So, I put it in the freezer a few days ago to see if it would charge after freezing. I'm not totally sure it will work yet, but it seems to be charging! I might just be tricking the temperature sensor into thinking it is charging as the battery returns to room temperature, but I'm crossing my fingers that it will actually work. I find it absolutely amazing, but it seems that in general, when electronic things don't work, you can freeze them and they get better. It's so stupidly simple. Lasers are also like this - the body temperature of one of our lasers is 12 degrees cooler than the range specified by the manufacturer, but this is also a good thing - not sure why, but it is according to the technician.