The unit will not work when pluged into ac without batery installed. When both battery and pluged in the unit doesnt seem to be charging the battery although it says its charging. However if you unplug the unit the screen dims as if it was working off ac power. any suggestions will be appreciated.
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This is true, you will not be able to charge the battery without the correct charger. For mostly all laptops, when the charger is not maintaining a charge, it is time for a new one. However, it does not have to be the manufacturer's adapter, but I recommend purchasing the battery made for the Compaq Presario M2000 Notebook.
NextTag.com has decent deals on these adapters.
I hope this helps. Please let me know if you have any other questions.
batteries have a charge memory in the, when you purchase a new battery the best thing to do is to fully drain the battery before charging it up, this will tell the battery that it needs full charge, if you charge the battery before this it will only charge the battery to a certain percentage. what you need to do now is find a way to fully discharge the batteries
All batteries lose their ability to store power after every recharge. I would say the problem is the battery so get a new battery soon but don't forget to charge the new battery. If the problem is still there after replacing the battery, then my next guess is the laptop.
Your battery is dead. You need to get a new power adapter. The battery isn't charging. The AC adapter went south. If the laptop is under warranty, you can get one from Compaq. Or, what I would do is shop on the internet and order one. Whats the numbers on the ac adapter? I'll help you find one.