I don't know of any computers which have re-chargeable battery which can be recharged when the computer is running.Muddypause wrote:If it's what I think it is, the little battery that keeps the clock going in the computer will last for years - probably the life of the computer. Think of the tiddly little battery in a digital watch; that will often last for years before it needs changing. To save power, I'd go for switching it off at the socket. Unfortunately, my computer will lose some of it's settings if I do that to mine. But as I understand it, when it is off-but-still-switched-on-at-the-socket, its power consumption is greatly reduced from when it is "on". Still not zero, though.ina wrote:And if I turn off the computer at the mains, I run down the internal battery, but save the electricity for the little lights at the back (what are they for, anyway ?) That's a dilemma, now - what does actually save more? Couldn't the battery be a re-chargeable one that gets charged while the computer is running?
I am sure this could be invented if a computer company thought it was worthwhile.
I have always had Apple Macs at home and I did have one where the internal battery ran down before the computer "died".
I have seen lots of "low battery" messages on the PCs where I work and it is such a common problem that I have to dispute the notion that the battery normally lasts as long as the PC. In fact I have seen a "low battery" message on a comouter less than a year old where I work.
"Disposable" computers are a very big environmental problem due to the difficulty and hazards involved in recycling them.
So it makes "earth friendly" sense to make them last as long as possible, basically use them until they can't be repaired any more. There is a fair bit on the net about how to make use of 'older computers.
As far as the energy output of repairing a broken computer battery versus power saved by turning it off at the mains, I don't know which weighs up better. However it is wise to consider energy saving features when buying a new computer. The newer Apple Macs have a sleep function which is very energy efficient, they also have an "energy saver" feature.