Thanks for that Judd…not decided yet 
What you could do with your copper bath Summer, is to drop a large lead weight into it, fill it up with a diluted solution of sulphuric acid, attach a cable to the bath, and another one to the lead weight, and you can have a giant battery to supply your energy needs. 
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One and a half volts isn’t going to light a LED very effectively though is it? Though it would last a long time.
Have you tried it Bruce?
There’d be a damn sight more voltage than one and a half volts with a battery that size.
I don’t think so, it is just one cell, a lot of amp hours though