I have a Compaq Presario 2100 the plug in on the back to where you plug in the cord to charge the battery has come out so I cant charge my batter nor can i use my laptop. I was wondering if I bouhgt a USB cable and a USB station that I could plug into the outlet would allow me to use my laptop again, or would I just have to go get the plug in fixed?
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Unplug the power supply, take a stiff tooth brush and clean the battery terminals in the laptop plus the battery, re-install the battery and plug the charger in, If that fails you need to find out if the charging circuits are putting out the proper voltage before you replace the battery.
Yes. Usually they either work or they don't so obviously when they test good they should charge the battery. Dell laptops have a "data pin" that determines what wattage of power cord is plugged. If this data pin goes bad on the power cord or motherboard the laptop won't charge.
I had the same problem on my CQ60. HP battery test showed one or more cells not working. After spending about 2 hours talking to some guy in India,or somewhere, he came to the conclusion that my battery was bad. HP sent me a new battery, which fixed the problem. kenbun
YOU NEED TO RECALIBRATE YOUR BATTERY. FIRST UNPLUG THE POWER CORD AND LET YOUR BATTERY RUN ALL THE WAY DOWN TO 5%. THEN PLUG YOUR POWER CORD BACK UP AND LET IT RE-CHARGE THE COMPUTER. SOMETIMES WHEN YOU FREQUENTLY UNPLUG YOUR AC ADAPTER YOUR BATTERY FORGETS HOW MUCH POWER IS ACTUALLY AVAILABLE IN CONJUNCTION TO WHAT THE BATTERY METER IS SHOWING. RECALIBRATING THE BATTERY WILL RE-SET THE METER WITH THE BATTERY.
When you install a new battery and remove a battery always make sure the laptop is completely shut off and have the power cord removed so that you avoid any possible power surge.
Batteries generally don't last much longer than a year and I have found removing the power cord or battery when it is off to be a good practice.
Before you charge a battery make sure it is run most all the way down. Recharging a battery when it is not run down can give it a memory and you may only be able to charge it up to the point you started charging it.
Anyway, if the computer won't charge a new battery then you could have a bad motherboard. To be sure try another battery.