Help Eks identify this part!

[Eks]

Dunno if this is the right place to ask, but here goes.

First thing's first, my ride is a 1988 Ford F150 XLT Lariat (the 4.9 300 I6 model).

While putting in a temporary battery (from a Dodge Neon, just to get it started up) I noticed a "reservoir," I guess, to the right and beneath the battery.

Pictures for reference:

I've looked everywhere and can't find anything about this little piece. Any ideas? I can provide more pictures if requested.

 

[mwoodski]

Charcoal canister.

 

[Gerarghini]

Charcoal canister, part of your EVAP and emissions system. It's located under my battery in my Integra as well.

 

[LM7325]

Gotta love those soup can Vacuum reservoirs. I am surprised a truck of that vintage still has all of it's emission controls intact.