I am a car audio installer. So everything I work with runs off of 12VDC. I wanted to make some fun audio related experiments and film them. One experiment I was thinking of doing was making a bunch of lemon batteries and running a car audio CD player off of them. But I recently learned that apparently lemon batteries can not provide much current or voltage. So does anyone have an idea of how I can make some batteries that will be able to provide about 6 amps and 14 volts? I have some battery acid lying around in my house that I can use. I know I can fill up a large cup with the acid and find a big chunk of copper and place it on the acid and get a large chunk of zinc and place it in the acid and I will have a battery. But the question is will it be able to provide enough current and voltage? And if not how many would I have to make? Anyone have some ideas on making a battery for my application? Also does anyone know of any other electricity related experiments that I could do? It does not have to involve audio. Just anything that would be interesting to film.