True actual Eneloop story. My sweetie got obsessed with them last year, has one of those smart chargers, all that. I am away at grad school most of the year. So at some point during midterms or finals or something, I was freaking out that some piece of tech I had wasn't working, I didn't have good batteries -- and he sent me Eneloops of my own as a present. I was incredibly happy!
But then, I went out of town and left some charging and when I came back, they were missing. My roommate says, "Oh, I used them and tossed those out, I will buy you more." I explain to her that they were a GIFT and I don't want ones she gets me. And eventually, the truth came out -- she put them in her RABBIT Red Rider BB Gun while I was out of town, in the wrong orientation, and they got stuck in the thing, and she ruined the Red Rider BB Gun and the batteries.
So, my batteries got replaced, and she got a new Rabbit vibe, and swore never to use my Eneloops again. And if I thought *that* set was sweet and romantic, sparkly rainbow ones are the MOST ROMANTIC GEEKY THING EVAR, at least if you have a lot of battery needs. But be careful how you put them a Red Rider BB Gun, or you'll ruin everything.