Question about Compaq Presario M2000 Notebook

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Takes 4 days to charge battery and dim display

Battery charge at 100% ....A/c power on When I pull the battery the computer shuts down...dead

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  • khrisier May 11, 2010

    Maybe you must change the batery...

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  • 108 Answers

You battery has become weak check and replace the battery

Posted on Jul 22, 2009

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My battery went dead and after i charged the battery the air conditioning does not cool


What happens is, you have a battery and an alternator. The alternator charges the battery when the engine is running. It can only put out so many amps at 12 volts. A/C compressor runs off the engine, but the clutch for it is electric, and the blower fan is electric. When these are running, unless the car engine is running at above idle RPM's, your alternator may not be actually putting out enough amps to run the A/C AND charge the battery. So it is possible for the battery to go dead, especially if you start the car more than a couple times with out letting the battery charge. It happened to a friend of mine. He delivered newspapers, and it was a hot summer day. His A/C was on, plus, his car had 2 electric fans for the radiator. He was only idling along delivering his papers, and at one point he shut his car off. When he went to re-start, it was dead. He called me and I gave him a jump start, and told him to go for a ride down the expressway, to charge his battery. You see the A/C took say 30 amps, then each cooling fan for his radiator took say 20 amps a piece, then add in the stereo, and the power it takes to fire the spark plugs, and there wasn't enough left to charge the battery. Most cars these days only have 100 amp alternators. Older cars have less

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Sony vaio laptop shutting down while plugged in


If it's left on for a period of time, specified by the power settings, it will dim the display, Hibernate, Sleep, etc. In the Control Panel, Power settings, Advanced Power setting , Change to High Preformance, adjust Hibernate and Sleep to Never, adjust advanced power setting to your specs. Shut down and unplug laptop , remove battery, when not in use, if you use on AC most of the time remove battery.

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Agptek replacement battery not working


If thelaptop battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.

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My hp 540 in battery mode while powered on switches off automatically within 4 second even before display appears, booting takes place whereas in adaptor it is reatsrting automatically


Ifthe laptop battery is more than 3 - 4 years old then the battery could be wornout. Rechargeable batteries have a finite number of charge and discharge cyclesand will lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up atall. ORThe battery shows a 100% charge but when the adapter is disconnected thebattery drops off to zero capacity in a very short time. Ifthe battery drops to an unacceptable charge level then the battery needs to bereplaced.

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1 Answer

Battery won't fully charge. Max charge seems to be slowly going down. First noticed charging light coming on intermittently but battery only reached about 93%. 4 days later and the max charging seems to...


It seems that the issues is with the battery itself, not the cppu.

To double check, you can do the following:

1. Disconnect adapter and run battery completely dead.
2. Reconnect adapter and let charge for at leasst 12 hours OR until battery displays 100% charge.

If it still won't charge to 100%, then you know for sure the battery is defective/worn out..
If you want to know more about this, look on wikipedia for: "Laptop Battery Lifespan" or "Laptop Battery Memory Charging".

But I'd say it's safe to assume that it's time for a new replacement battery for your Notebook PC.

Hope this helps!

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Friend, the power switch is damage thats why the charger acted as switch. replace the power switch

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ups charged for 8 hrs .No alarms but on powerfail no output to connected device

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1 Answer

Display Screen Went Dark...


This would seem like the power supply is broken and the computer is working off the battery or the setting need to be changed in power management. Whenever you disconnect the power supply and work form the battery, as power saving mode, windows will dim the back light to the display. First check if the power supply is charging the battery and then check your settings in the following: Start menu -  Programs - IBM - Battery MaxiMiser Wizard. Follow the steps until you get to the LDC display level. You may need to increase that.

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1 Answer

Battery appears charged, but computer will only run when plugged in


does your battery have one of those charge indicator panels on bottom?

also, it's possible that the connection from battery to the internals is shot..if that's the case, then you're looking at a major motherboard swap

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