Exactly as stated in the title. All my life I’ve been able to touch my phone or computer’s electrical charger output (accidentally or for whatever the reason) with no sort of “buzz” or feeling from the electricity going through the output. At least that has always been my experience with it.
Just in case: Don’t intentionally try this of course.
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There is a printed industry standard somewhere that says the limit to how many volts can penetrate dry human skin is “somewhere around” 60V, whether it is AC or DC.
If you touch 72V and it doesn’t shock you, there are also many variables. I don’t know of anyone who can’t feel 120V AC.
the more volts you have, the fewer amps you will need to achieve “X” amount of power. This is why 48V is popular for off-grid systems. You can series solar panels to output 120V DC to charge a 120V battery, however, a fully charged 48V battery is around 54V, and stacking one more 12V battery onto it would make it around 65V, plus or minus. The nominal 12V lead-acid batteries are around 13+ volts when full, and around 11V when they are considered depleted.
Lithium cells are only 4-ish volts each, so a 52V ebike battery (14S) is around 58V when fully charged, and going to one more cell in series makes that roughly 62V.
If you want to use mass-produced components to save money, the next big jump is up to 72V (20 lithium cells in series).
You should always exercise caution around high-powered batteries, even just a 12V one.
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