Home Made Power water battery

Here is a short video showing the power in tap water and how to extract it.
no tricks in this video. the only trick is to use real magnesium and real silver.
you can still make a similar battery using aluminum and copper however it will not have as much voltage as my selection of materials. if you know of better materials please post in the comments below.

thank you for watching.

anode/cathode is confusing to me charging /dis-charging.
to restate what i meant silver is + and magnesium is - when checking with meter.