Battery charging problems

In this post I explain how to troubleshoot battery charging problems. I will discuss most common failure examples and suggest some troubleshooting steps.

Example 1.

Laptop shuts off when AC adapter unplugged.

When you move the cursor arrow over the battery icon while the laptop is connected to AC adapter, it show the remaining charge and says “charging”.

The power meter utility (if available) also shows that battery is connected and charging.

But… as soon as you unplug the AC adapter, the laptop shuts off completely.

Possible problems:
1. The battery not seated correctly. Try reconnecting it.
2. The battery contacts got dirty or oxidized and it’s not making good connection with the motherboard. Apply some electronic contact cleaner on the contacts.
3. If reconnecting the battery doesn’t help, most likely it’s bad and has to be replaced.
4. If you replaced the battery but the problem still exists, this is motherboard related failure. Apparently the charging circuit on the motherboard failed. In this case the whole motherboard has to be replaced (or repaired on the component level).

 

Example 2.

The battery not detected by the laptop.

There is a red cross on the battery icon.

If you move the cursor arrow over the battery icon, it says “no battery detected”.

Possible problems:
1. Most likely the battery is bad. You have a very good chance to fix this problem by replacing it with a new one.
2. If replacing the battery doesn’t help, this is motherboard related failure. The motherboard has to be replaced (or repaired on component level).

 

Example 3.

The battery discharges very quickly after it reaches some critical point.

The battery detected by the laptop and charges properly to 100%.
When you unplug the AC adapter, it take normal time to discharge until some critical point (let’s say 80%) but after that the battery discharges very quickly to 0%.

Possible problems:
This is battery failed. It has to be replaced with a new one.

 

Example 4.

The battery charges only if the power plug positioned correctly.

You have to wiggle the power plug in order to charge the battery. After you find the right position, it charges properly.

Possible problems:
1. AC adapter failure. The AC adapter power cable is damaged. Here’s how to test your AC adapter.
2. If the AC adapter works fine, most likely this is power jack (connector where you plug power adapter) failure. In this case the power jack has to be replaced.


151 Responses

  1. @ Rob,

    The blue light at the plug-in point no longer lights up, and it doesn’t recharge. Someone at work tested my power adaptor and said it seem to be Ok. Is this a battery issue, or do you think it is a connection problem?

    Could be a problem with the DC jack (power socket). Can you make the light work if you adjust position of the power adapter inside the socket?
    The DC jack located on the power board. You can try replacing the power board and see if it fixes the problem.

  2. Hello,
    I have a Compaq Presario F500, and I am unable to charge my (now exhausted) battery. I had one or two instances where despite being plugged in, the ac adaptor didn’t charge it. Then, the battery ran out while plugged in. (This makes me think the battery was OK.) The blue light at the plug-in point no longer lights up, and it doesn’t recharge. Someone at work tested my power adaptor and said it seem to be Ok. Is this a battery issue, or do you think it is a connection problem? Hope you can help.

  3. @ ysiad,

    my batery is not charging but i already put the adapter what should i do

    If your AC adapter works properly, it could be one of the following:
    1. bad battery.
    2. failed DC jack.
    3. failed motherboard.

  4. my batery is not charging but i already put the adapter what should i do

  5. I have my battery removed, but when I plug the AC Adapter cable in, it show the remaining battery charge and says “100% remaining (charging)”, since this morning and it still happening. And when it does that, my CPU fan suddenly stop working!

  6. Leorick

    Good day,

    I have a compaq A900 laptop. It was given to me by a friend so i could check what the problem is but I’m currently at a loss.

    I have checked the AC adapter with a multi-meter and it is ok. I also dismantled the laptop and check the DC harness cable and it is also ok.

    The problem is, when i plug the AC adapter, the LED’s will not light up and it does not charge. I’m not sure if the battery is dead since i cannot charge it.

    Now the tricky part is, when I used a fully charged battery from a friend, the laptop works fine. There must be something on the motherboard I’m missing. I checked all the pin connections of the motherboard to the DC harness and it seems ok.

    Any information will be greatly appreciated. Thank You very much~!!!

  7. i have a laptop HP Compaq,presario c700. my battery and charger are OK except that it charges only for one minute and it writes (plugin, not charging). kindly advise the solution for this

  8. satender

    my laptop is showing the following error on battery icon with a red cross sign on it.
    “(plugged in, not charging), consider replacing your battery.”

    i works well on power but shuts down within 5 minutes ion battery
    does i really need to replace my bettery or some sort of solution available.
    waiting for your reply.
    pls mail me the reply as doinf a favour for me. thanks

  9. jessie

    I plug a wire into my laptopv where the charger normally plugs in , and now my laptop will nott charge when i plug the charger in , its not the charger as it is working in other laptops ?

  10. cj2600

    Amanda,

    my lap top was charging and my son kick the charger in when it was charging and now the computter won’t work and when i try to charge it won’t charge.

    What do you mean by “computer will not work”?
    Does it turn on at all? Do you see any lights when AC adapter plugged in? More details please. How it’s failing?

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