paulr

According to the manual, 0.7W consumption on standby, phone in charger.

0.7 / 1000 = 0.0007 KWH

Cost per unit of electricity=11p.

0.0007x 11p=0.0077 pence (thats for one hour)

x 24 x 365= 67.5 pence.

Correct?

warrenm2

no.

0.7w /1000 = .0007kw not kwh

*UPDATE*

Right I thought I'd do all the maths so...

0.7W=0.7J/s Therefore usage in 1 year = 0.7*60*60*24*365 = 22,075,200 J

1KWh = 3,600,000 J Therefore usage in 1 year is 22075200/3600000 = 6.132KWh @11p/Kwh = 67.452 p

So yes you are correct!

riiidaa

iTrader: (2)

if you leave it on charge constantly you'll do no good to it's battery and it'd cost you less to run if you remove it from it's charger between charges...

paulr

Yes, 0.4W when the phone is not in the charger.

ALi-B

iTrader: (1)

Depends on the charger circuitry and the type of batteries IMHO.

Ni-CD can be left on a very small trickle current indefinetely (otherwise they wouldn't be used in external alarm boxes etc).

Ni-Mh aren't so good for this. Better if its a peak detect (Delta-T) charger and given a pulse charge every so often to counteract the self discharge.

Li-ion not an issue- as it will have a dedicated charge control circuit...otherwise they'd start exploding But they should never be allowed to discharge as excessively discharging Li-Ion batteries does kill them.

Eitherway if its a constant current charger ni-cd should be chared around at c/20 or with ni-mh it should be around C/300 (once fully charged) where C is the capacity divided by the number giving the charge rate in milliamps.

The problem is some DECT phone have shyte charge circuits. Our Motorola DECT phone has killed its batteries, so obviously has a "dumb" charger that gives out too much current and overcharges the cells. Whereas the cells in the Panasonic DECT phones we used to have outlasted the phones; The old cells from the old Panasonic phones are actually being used in the Motorolas now

dpb

Christ this really is counting your pennies, I appreciate you're not employed but...

Do you ever turn the tv on?

WRXBOB

Who do you use for your electric? Pretty sure we're paying more than 11p per unit with Eon.

paulr

Yes, it is a bit OTT.

riiidaa

iTrader: (2)

Just think how much it's cost to read your reply!!

I forgot about the cost of the dect chargers standby - however if it's an extension charger and not the base station, it can be turned off.

AndyC_772

iTrader: (2)

As a rough guide, to supply 1W for 1 year costs £1. Your phone will cost a great deal more in calls, line rental, initial purchase price and (possibly) replacement batteries than it ever will in power.

paulr

And if the average wage is £15/ hour, the 15 minutes spent working it out, thats around 6 years worth of leccy.

legb4rsk

Please God,tell me I'm not reading this!

dpb

Well I don't know about you but iv certainly removed the handset from the stand after being given the full dirty details

I don't want to end up in paupers prison.

Ant

Thinking the exact same thing!

If you want to save money cancel your phone and just use mobiles

dunx

iTrader: (3)

You have to pay for a line to have an internet connection, we aren't all living in Virgin'd up areas.

dunx

P.S. Yes I have considered a 4G solution...