Battery doesn't hold charge for more than a week

It most likely needs a new battery, but you could try giving the battery a full charge first:

1. Power off the laptop and disconnect the power adapter.
2. Re-seat the battery (remove/reinsert)
3. Reconnect the power adapter and let it charge overnight. (6 hr+)
4. Disconnect the power adapter.
5. Power on the laptop (run under battery power only)

If it doesn't boot up and shuts down immediately, it's probably time to see about a replacement battery.





2.

If the laptop 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 and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. Rechargeable batteries will fail if stored in a discharged state for long periods.
Laptop batteries vary from laptop to laptop. i suggest you Google the Internet for a battery for your model laptop.

its draining the battery while off,or battery needs replacing

If this is brand new return it the place of purchase, this is a serious manufacture issue.

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.

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.

Make sure that the battery is connected right and if it still has a problem try getting a new battery. After a while batteries stop holding their charge and need replacing. batteries can be found online or around 20$.

How do you know the ac adapter is working? Just because the light on the ac adapter is on doesn't mean it's working. Does it work with the ac adapter plugged in? Just not charging the battery. If in the first case just buy a new ac adapter and see if it works, most are affordable some not so much. If the battery isn't charging then you will have to shop for a new battery. If both of those are good then you have either a bad ac plug on your laptop, or motherboard issues. Hope this helps, if you have more questions just reply and I will try to help.

Whenyou connect the power adapter into the laptop, does the power LED lightup? If not then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

phone have manufacturing problem of battery or so you have to change your phone brand or model