# [Oeva-list] Watts up?

D K dimakukushkin at gmail.com
Mon May 9 13:18:00 PDT 2011

```Steve, you lost your bet.  Here is what I got from "Jason" on the Blink
support line.  It's MORE power than I expected!

A working unit when it is just sitting doing nothing the unit pulls about
0.2 amp at 245.7 volts AC.
Power is V X I = 245.7 Volts AC x 0.2 Amps AC = 49.14 Watts.
Multiply 49.14 Watts by 24 hours and divide by 1000 =  1.17936
Next Multiply 1.17936 by hourly rate for example (15 cents per kW) =
0.176904 cents per day
Last multiple by 365 days a year by 0.176904 to get \$64.57 a year to have
blink connected and sitting in garage or roughly \$5.38 a month.

But "Jason" said they are workign on screensaver, but not sure how much will
it decrease idle power.
In my context - I have 2 rooms and kitchen on first floor, all wtih CFL
bulbs totalling 150w appr. Being used 6 hours a day - it's 37Wh per day!  So
my idling Blink dock-station sucks more power than my first floor lighting.

It it 1.17 KWh per day!!!  What a waste.

I'm definitely shutting it off for longer no-use periods, like weekend
vacations.  It surely off now, since I'm not getting my leaf for another
couple weeks.

\$5.38/mo extra just to have fancy extension cord..... called EVSE.

140 wasted electric miles per month.

I really hope they will design good screensaver soon.
Dmitry

ps  I'd like to verify this by using 110v Watts-up meter, can figure out
what happens if I put it on one phase and ground.  Any advice here?

On Tue, Apr 5, 2011 at 7:39 PM, Steve's Account <stevel at fern.com> wrote:

> > From: D K <dimakukushkin at gmail.com>
> > Subject: [Oeva-list] Blink charger - screen always on?? wastefull,
> >       isn't it?
> >
> > Got my BLINK charger installed today.Was surprised by absence of
> > screensaver.  I yet have to find a way to measure power sonsumption of
> idle
> > mode, but I bet it's around 30watt.
>
>
> I'll take that bet!
>
> Depending on the type of display, a small LCD, backlit by an LED,
> especially
> one displaing a static message, can run on vanishingly small amounts of
> power.. if you don't have a CPU chip running, too (hence the static
> message.) it's going to be closer to 10 watts... and carefully done,
> an average current of 1 watt is doable...
>
> And in a lot of cases, such a display won't be much more than the LED you
> need to say "I'm on", in any case.
>
> Steve
>
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> Oeva-list at oeva.org
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>
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