Batteries in the boneyard

[Kit Buckley]

Hey,

I'm moving soon and have a bunch of unused Lithium Ion batteries that I was going to put in the boneyard. I also have a huge brick of a LiPo: 6 Cell (22.2V) at 5000 mAh that's never been used and doesn't show signs of puffing but it is 5 years old. Is that an okay thing to put in the boneyard / would anyone want it and if not, what's the best way to dispose of it?

Thanks,

Kit