Question about HEWLETT-PACKARD Hewlett Packard Battery for HP/Compaq Presario CQ40 (4400 mAh, DENAQ)

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When i am plugged in the laptop is working. the battery shows fully 100% charged. but when i unplug it from the mains laptop only works for 5 minutes . WHY?

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You have the same problem as me. Don't forget that batteries have their shelf life as well. After a few years laptop batteries become inefficient and are unable to store the full 100% capacity as storage sectors become obsolete. I had to go straight to the Producer and order a replacement battery for around 100 bucks.

kc

Posted on Mar 22, 2011

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Try to connect the AC adaptor of your laptop and plug it to the wall outlet and let it charge for 3 hours or more. When you plug it on the wall socket, it won't show the laptop's led blinking since it was totally drained. But after 3 minutes or more, it will start to show the blinking led to indicate charging. When blinking stops led light disappears, it is fully charged and ready to use.

Remember: Do not use your laptop while it is plugged in to save your battery life. When at home, remove the battery while it is fully charged and plug the AC adaptor directly to the wall outlet. It will still work without the battery as long as it is plugged directly to the wall socket.

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