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Battery charging light

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#1 dobbin


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Posted 23 December 2008 - 09:09 AM

I have a HP laptop six months old.
I always run it off mains but leave battery in.
I also switch it off when not in use but leave it connected at the mains.
This morning I noticed for the first time that the battery light was on when I looked at it. (green light) This stayed on for about 20 minutes before going off on its own accord.
That would indicate that it was charging the battery wouldnt it?
Can anyone tell me if this is normal when the machine is switched off (not hibernating) but still obviously able to access mains power through its ac adapter.

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#2 garmanma


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Posted 23 December 2008 - 12:21 PM

Did you condition the battery when you bought it?

You can actually condition your battery to retain more power. When you purchase a new laptop or a new battery, it comes to you completely empty of charge. Though most of us canít wait to get back to using our laptops cord-free the moment possible, itís important to let the battery accumulate a full and complete charge.

For the first two or three cycles only, youíll want to completely deplete your battery before recharging to the max. This ďtrainsĒ your battery to understand its own power capacity. After those first few cycles, youíll want to recharge your laptop battery, ideally, before it depletes entirely.

If youíve got to recharge every two hours, itís time for a new battery! Most of us put off buying a laptop battery until the computer practically wonít hold a charge at all. Buying a laptop battery may not be as interesting a purchase as buying something new for your closet, but once it arrives, you might wonder why you waited so long to make your life so much simpler. Once you get it installed, try out some of these tips. If you treat your new laptop battery well, it may just last until the eight-hour battery finally becomes available.

Author Christine Harrell writes for EBatteries To Go, a company specializing in laptop batteries and accessories.

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#3 dobbin

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Posted 23 December 2008 - 12:26 PM

Hi there Garmanma.
The short answer is no I did not. I have never had a laptop before and just wanted to get it up and running.
My concern is if this is normal then thats okay. If not then perhaps I should take the plug out of the socket when not in use.
I did phone HP support early on today as I couldnt even find out what the light referred to in the documentation.
I cant say that they were the most helpful of people.
Its not come on again since and the battery shows as 99% charged in the power options.

#4 dc3


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Posted 23 December 2008 - 12:41 PM

You should find out if the battery for you laptop is a Lithium Ion or a Nickel-cadmium (NiCd). The description that Garmanma posted is true for NiCds, but Lithium Ion batteries like a partial discharge and should not be subjected to full discharges. If you wish to know more about Lithium Ion batteries, read this article.

Edited by dc3, 23 December 2008 - 12:46 PM.

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