It really works
To my surprise, it really does work.  I have this little shaver that goes through AAA batteries pretty quickly, so I put the batteries into the device and plugged it in.  Three days later, the 'renewing' light blinked out (i.e. the battery was renewed), so I tried the batteries out and they are working like new.  It was very easy to use, too.  If you use a lot of AA or AAA batteries, I'd highly recommend this ReNu It Battery Renewer.<br /><br />Update: I found that if I didn't immediately use the renewed batteries, they would start leaking.  So either don't leave the renewed batteries sitting around unused or get normal rechargable batteries (which is the option I've finally ended up going with).
Rating: 5 stars