How to test laptop output to the battery - HP Pavilion Dv9910us Notebook PC

disconnect the adapter +battery . Hold the power button by 45 secods.
After connect again normally and try again. If the problem persist, test a) adapter measure the output voltage indicated in the plate of adapter. b) test the battery c) see if the post connector for adapter is faulty and repair.

God bless you

disconnect the adapter+ battery , HOLD the power button by 30 seconds. the idea to release all the ESD accumulated, and connect the adapter+battery again and try it.
If doesnot resolve restart the computer HOLD the CRTL +F12 keys and use the software for recover to factory adjust.
If this does not resolve the problem test the power adapter output, the output battery, use the software utilitary coming with the computer for test the battery.

God bless you

Check your charger to make sure it is the right one for your laptop. If it is then test it's output to make sure it is producing the correct voltage and amperage. You can read the label on the charger to find out what it should be. Then a simple test with a multimeter will tell you what you want to know. If that is all good, check the contacts where the battery plugs in. Are they in good shape? Not bent or broken. Clean them with a pencil eraser so they are shiny. Now, disconnect the charger and plug in your battery. Do you have an indicator of power? Will your laptop boot? If not, use the multimeter to test the output of the battery. It should read the same output voltage as the charger.

Battery can be replaced easily?

Possible cause:

1. Power adapter failure.
2. Motherboard failure.

Possible troubleshooting steps and repair solution:

First of all, test the power adapter. Make sure the adapter outputs correct voltage. It's possible that the output voltage is not correct and the laptop shuts down to prevent the damage. Test your laptop with another known good power adapter.

If the problem still exists, even after replacing the adapter, most likely it's the motherboard failure. Replace the motherboard.

Problem description: The laptop shuts off when AC power adapter is plugged in. The laptop works fine on battery power but as soon as you connect it to AC adapter, the laptop turns off.
Possible cause: 1. Power adapter failure.
2. Motherboard failure.
Possible troubleshooting steps and repair solution: First of all, test the power adapter. Make sure the adapter outputs correct voltage. It's possible that the output voltage is not correct and the laptop shuts down to prevent the damage. Test your laptop with another known good power adapter.
If the problem still exists, even after replacing the adapter, most likely it's the motherboard failure. Replace the motherboard.

Resource: Acer Laptop AC Adpaters

Problem description: The laptop shuts off when AC power adapter is plugged in. The laptop works fine on battery power but as soon as you connect it to AC adapter, the laptop turns off.
Possible cause: 1. Power adapter failure.
2. Motherboard failure.
Possible troubleshooting steps and repair solution: First of all, test the power adapter. Make sure the adapter outputs correct voltage. It's possible that the output voltage is not correct and the laptop shuts down to prevent the damage. Test your laptop with another known good power adapter.
Toshiba Satellite A305 AC Adapter
If the problem still exists, even after replacing the adapter, most likely it's the motherboard failure. Replace the motherboard.

1)Reason:
a.The battery has no voltage.
b.There is problem with charger, as it has no output electric current.
c.Low charging efficiency due to external cause.
2)Solutions:
a.Test whether the charger has voltage and output electric current or not.
b.Check if the charger is well contacted with battery.
c.Activate the battery with voltage and current 1.5 time higher then the highest ones of battery. (Use this method only when the battery can't be charged.)

1)Reason:
a.The battery has no voltage.
b.There is problem with charger, as it has no output electric current.
c.Low charging efficiency due to external cause.
2)Solutions:
a.Test whether the charger has voltage and output electric current or not.
b.Check if the charger is well contacted with battery.
c.Activate the battery with voltage and current 1.5 time higher then the highest ones of battery. (Use this method only when the battery can't be charged.)

come from laptop battery site:http://www.buy-battery.ca/faq.htm

1)Reason:
a.The battery has no voltage.
b.There is problem with charger, as it has no output electric current.
c.Low charging efficiency due to external cause.
2)Solutions:
a.Test whether the charger has voltage and output electric current or not.
b.Check if the charger is well contacted with battery.
c.Activate the battery with voltage and current 1.5 time higher then the highest ones of battery. (Use this method only when the battery can't be charged.)

source from laptop battery site:http://www.buy-battery.ca/faq.htm