Out of my usual wheelhouse

Recently helped a rather lovely dude named Jeff with 5 sets of Playstation 3D glasses for a 3D display you see every so often. 

I sold him my old 3D display minus glasses a few months back. And he let me know he had a bunch of glasses that needed batteries replacing. 

Well... How hard could it be? 

It was two hours, where the hardest part was safely opening the glasses. My pry tool was ready. I however... Was less than clued up about how these glasses worked. 

Spent more time trying to make them light up... Not realizing there was a tiny "battery on" switch that needed to be on. After figuring out the first pair, those that followed went with few casualties. 

Only Jeff is allowed to bring more of these :p they're truly painful to take apart safely!

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