Saving Electricity and money on my laptop

Wondered if anyone on here could answer a question regarding power usage on laptops. I tend to have my laptop on for 10-15 hours a day.
Is it best (ie is it cheaper) to permanently leave the laptop on charge or charge it up, run it off batteries for a couple of hours, re-charge etc. I have no idea about these things and whether it costs more to keep re-charging or just to leave it always plugged in.
My wallet needs your help!!

Ive wondered this myself but i think its better to leave it plugged in as im guessing the power consumption goes up when your charging and using it at the same time.

I leave mine plugged in permanently on the basis that it might be cheaper, but do wonder as to whether it is or not...

I dont think they use a huge amount anyway. The PSU's are tiny in comparison to a PC. Keep your lappy on and turn off the TV. That would be cheaper.

A voice from upstairs.

Leave it on charge permanently - modern batteries have about 500 - 800 full recharges before they die. Unlike older batteries however they don't just die regardless. What I mean is if you keep it fully charged for a couple of years it will still be capable of 500 - 800 cycles.

It costs peanuts either way. So ONLY use the battery when you need to.

what they said. leave the lappy plugged in all the time, and turn the central heating down a couple of degrees instead if you want to male a noticeable saving

Originally Posted by ACAPULCO AL

what they said. leave the lappy plugged in all the time, and turn the central heating down a couple of degrees instead if you want to male a noticeable saving

I recently made the biggest saving you can make with regards to heating. I got divorced!!!
No more sweating my arse off sat in shorts and a tshirt with the fire on, central heating blasting out and her complaining how cold it is.
Savings also made on bog roll too.