Quote Originally Posted by i_amtrunks
It is my extreme reaction to an Energon Scorponok who decided that 2am was the perfect time to constantly repeat his noises.
Heh, that gimmick is pretty darn annoying. Ditto G2 Megatron (although after a while you get used to handling him without setting off his sound gimmick). When I discovered that EN Scorponok's gimmick was no longer working properly, I just thought to myself, "No great loss there." For some odd reason, my internal monologue voice sounded like Jack Black at that exact moment. Weird.

Quote Originally Posted by bruticus
Otherwise, open them up and put them back in box (BIB??)
It would be MIB (Mint In Box): i.e.: a toy that's in mint condition in an unsealed box.

Quote Originally Posted by bruticus
Quote Originally Posted by MV75
The button batteries should be fine to leave, it's the "regular" AAA, AA, C, etc batteries to worry about.
No, Im afraid the button batteries can still cause damage over time... Or at least this has been true for some secondhand TFs that i have bought with button batteries...
Me too. I wasn't sure about this, so I looked it up on the web and apparently watch batteries can leak if they're left in a watch that's not on. i.e.: watch batteries in watches usually don't leak because they're in constant use. Watch batteries left in an inactive toy over an extended period of time may leak. They probably have a less chance of leakage, but I'm not willing to risk it.

Having said that, 100% of toys I opened with watch batteries still have fully functioning electronic gimmicks, including my oldest TF with watch batteries - Laser Optimus Prime. I've never taken the batteries out of that toy and the gimmick still works fine. Those batteries would've been sitting in that toy for over 13 years now. But yeah... better safe than sorry.