DIYbanter - View Single Post - Mobile phone chargers without a phone

John Tserkezis

wrote:

Maybe I'm misunderstanding something, but isn't the only power
consumed due to wire resistance in the primary winding of the
transformer? Seems to me that should be miniscule.

They're all switchmode now, but either way, the residual consumption of
current while not in use still remains relatively close to miniscule.

Now phones that don't disconnect the charging circuit when they are
charged, and thus remain hot to the touch, would be a different
story.

And they don't exist.

But I have never encountered a phone with a lithium battery
that did not possess such a cutoff.

And you won't. One side effect of gross overcharging is the batteries go
bang in quite a spectacular manner.

So is there any material value to this practice or is it like saving
on gasoline by turning off the radio?

Like the other poster said. Cents per year saving, not worth the bother.

The tripe originated from some moron who thought the phone chargers exist
within a universe of their own. They don't, there are other considerations to
determining the cost of ownership, cost to environment, and overall power
consumption.
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