Laptop battery "charging" but stuck at 0%

Hi,
I have a Pavilion G6-1b79ca and the battery stopped charging.
Windows show "Plugged in, charging" and the level stay at 0%. Forever.
Obviously it is now completely drained.
If I remove the DC plug the computer close immediately.
Here is what I've done so far, more or less in that order:
1. Replaced the battery (recommended by the BIOS openning page...)
2. Tried this popular fix:
Shutdown->Remove Battery and power plug->Hold "POWER" button 30 sec->Plug DC cable->Boot->Device Manager->Battery->Uninstall Microsoft ACPI-Complient Control Method Battery ->Shutdown->Put Battery in (Can't boot on it alone since it won't charge... but maybe that could help)->Start computer
3. Updated all drivers and reinstalled all HP utilities (got the Intel drivers directly from the Intel website)
4. I updated the BIOS to the latest version and reseted it to default settings
5. Tested the power adapter with a multimeter (Psu unloaded, referenced to outer ground sleeve it read 19.8V=Inner plug, 18V center pin)
6. Replaced the motherboard (which has been replaced already)
7. Replaced the PSU
8. Reinstalled Windows
9. Soldered the power adapter directly to the motherboard to bypass all contact connections (cut the DC plug and soldered the bare wires directly to the pcb)
The HP BIOS utility (F2 at startup) tells me that the new battery fails the test and need to be replaced. Awesome.
The battery test in the HP assistant utility (run in Windows) tells me that the battery is OK but would need to be charged (Seriously???? This is becoming funny...)
So basically the hardware is brand new.
Windows/HP utility tells me that the battery is OK but the BIOS utility will tell me to replace it.
What the hell is happening????
The hardware is supposed to be A1 (fully replaced) and windows have been completely reinstalled.
Any suggestion?? My sanity start to fade....
On a side note, here is the situation I hope did not happened:
1. The original battery failed
2. It burned the motherboard charging circuit
3. I replaced the battery which then got damaged by the burned motherboard charging circuit
4. I finally replaced the motherboard which got damaged by the new battery, that was damaged by the previous motherboard, which was damaged by the original battery....
5. Back to square one, a couple of hundred $ less and a lot of time lost....
I can't see myself buying ANOTHER motherboard/battery combo without going crazy.....
Thanks for any help !
This question was solved.
View Solution.

IT'S ALIVE!!! Lolll!
The problem was the new battery, I don't know why but it was completely drained and never got to charge.
I ask the seller to replace it and to charge the new one a bit so I was able to boot on the battery only.
I removed the psu and the battery, held the POWER button 30sec and booted on the battery alone.
Once in Windows I pluged the charger and now it is fully charged!
Looks like the key here was to be able to boot on the battery alone. a thing I never could achieve while struggling with the drained one.
Hope this thread help someone to troubleshoot battery problems, since it contains a LOT of possible solutions.
Thanks to those who took of their time to help!

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Battery shows charging but stuck on 28% and does not hold charge

i am using HP DV6-6107tx, i got a new extended battery from anker which seemed to be running fine untill it discharged while i was playing watch dogs.
now my laptop wouldn't power on just on the battery, everything works fine if it is on charging, but the battery does not hold charge and my system powers off immediately on removing AC adapter. the battery shows "28% Charging" but does not increase or decrease the percentage even after hours of charging both while system is on and off.
i checked the battery in battery test from HP Support Assistant and it says that the battery status is ok, now i have tried the below methods with no luck :
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can anyone guide me as to what is the issue here ? i don't have another machine to test my battery on, the charging lights are fine except that the light does not change color which it did on full charging the battery. i did try on 2 different adapters.
now if it were a motherboard or IC issue, would it not have said 'not charging' in windows ? in my case it says charging.
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Hello, M_Bilal
Welcome to the HP Forums.
That you for provided such a detailed post with what you've already completed, for the issue with your battery. I will try to guide you further.
I would like to provide you further documents for troubleshooting, but you've essentially completed what I have for this issue. The only step left, would be to test the battery.
You can do this with another battery, or in another notebook. I know you mention another machine, but if you know someone who does or someone who has a compatible battery. This would test that. You could even see if a local computer shop could test it.
The reason for this, is if the battery is the problem, it's much easier and more affordable replacement. Also, you mention it being new, might have warranty.
The other possible cause to the issue you've touched on, that would be the system board. Testing the above, would just confirm if this is the problem or not. From there you could decide on what you'd like to do.
I know, there really aren't many suggestions here, but I hope this can provide you with the next step.
Let me know how things go, with the route you choose to troubleshoot.
Thank you for posting on the HP Forums.
I worked on behalf of HP.

DV4 Battery Issue - Battery Charges; But Laptop Won't Run From Battery Power

Greetings,
I have a DV4, and let me tell you - I am so over this laptop. I have had it for over a year, and in that time, the backlight went out 6 months into owning it, the battery died just after the one year mark, and the webcam has been broken since I sent this computer back to HP to have the backlight issue resolved. I will never buy a new HP ever again.
Now, the battery I have replaced in my laptop charges - but, when I unplug the laptop from the wall, the battery power does NOT switch over. I have had this battery a total of two weeks - it was working fine until last night. Any ideas?
Thanks!

Hi, SoCal Cal. Take a good hard look at your battery contacts: both the ones on the battery itself and the "prongs" in the PB case that engage with the slotlike contacts on the battery. Are any of them significantly darkened/tarnished? Is there any debris or fluff on or in them? Clean out any foreign matter, then insert and remove the battery at least a dozen times in succession to see whether doing so will wear away any tarnish that may be impairing the necessary electrical connections. There's not really any easy, better way to clean the contacts, at least not the ones in the slots on the batttery itself. Then test again.
It sounds to me as though not all of the battery contacts are making good contact — though some of them obviously are, at least some of the time. Perhaps "working" the contacts this way will improve matters.
I really don't know what's going on with your machine; these are just shots in the dark.
Message was edited by: eww

T520: Slice battery charging thresholds stuck

I bought a T520 (4240) a few months ago and, like most people around here had the same issues with pulsing fans and, on applying BIOS 1.28, CPU throttling issues. I'm not sure if the latter one is fixed properly yet, but I also have a problem with the battery charging thresholds that has me stumped.
I have the 55++ and 27++ 9-cell main and "slice" batteries. For a while I let them charge up to 100% whenever connected to AC, but then I read that a 100% charge level is not recommended for day-to-day operation.
I use Fedora 15 Linux 99.9% of the time on my T520. I wanted to set the battery charge thresholds to avoid the 100% charge level, but the "tp_smapi" Linux driver doesn't work for the T520 (yet). I read somewhere that if I were to set the charge thresholds with the Lenovo Power Manager in Windows 7, that they would work in Linux as long as the laptop was not completely powered down when switching from Windows to Linux (i.e., use a warm boot). Well, it worked. In fact it worked really well: I could even power down and remove the batteries and something, somewhere would still remember that I wanted to start charging the slice battery when it dropped below 35% and stop charging it at 80%, even when running Fedora 15.
Having used the machine for a few weeks, I found that I used it on battery power a lot and liked to "top up" the batteries over night. The 35/80 thresholds didn't really suit my working pattern. So, back in the Power Manageer in Windows, I changed the battery thresholds from 35/80 to 50/88 for both batteries (55++ and 27++). On booting back to Linux, I noted that the main battery would respect the new levels, but he slice battery was still stuck on 35/80. Back in Windows, I tried changing the levels in different ways, but the slice battery refused to charge to more than 80%, even under Windows, no matter what I did. It seems that my first change from the default (is it 96/100?) to 35/80 has gotten stuck somewhere and I cannot change it again.
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I had kind of given up on this, but thank you KooMaster for your confirmation that I am not alone with this issue. I don't think this is a problem with the Lenovo or Windows software, as this happens to me when running Linux without either of those. My guess is that the problem is in the embedded controller (EC) firmware. It is responsible for charging the batteries and enforcing the charging thresholds (that's why they still work even when the machine is turned off).
It probably makes sense to charge each battery to 80% first, as it likely only takes half of the overall charge time to get to that level (the last 20% taking as long again). That way, we get both batteries to a useful charge level as fast as possible. However, based on your observations, it seems that someone in Lenovo forgot to tell the EC to check that the main battery has reached its upper charge threshold, not that it has reached 100%, before topping the slice battery up to its upper charging threshold.
Can someone in Lenovo please comment on this issue, as I raised it over seven months ago now and I haven't heard a single word from any of you about it? "KooMaster" has confirmed the problem on a different model with different batteries, so it seems highly likely that a quick check of the (shared?) EC firmware code and a patch will resolve this quite quickly.
(I updated my BIOS and EC firmware today and it made no difference to my problem.)

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Hi Daleg,
Welcome to the Forums
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[SOLVED] Brand new laptop, battery charges to 95% max (?)

I've seen this widely on a simple google search for "last full capacity",
the laptop has been used for just two days, but acpi reports:
koko@TravelMate ~ $ acpi -biatc
Battery 0: Charging, 100%, until charged
Battery 0: design capacity 4400 mAh, last full capacity 4182 mAh = 95%
Adapter 0: on-line
Cooling 0: x86_pkg_temp no state information available
Cooling 1: intel_powerclamp no state information available
Cooling 2: Processor 0 of 10
Cooling 3: Processor 0 of 10
Cooling 4: Processor 0 of 10
Cooling 5: Processor 0 of 10
it won't go higher than that.
Is that normal? maybe some sort of overcharge protection?
my previous netbook always charged to 100% or even a bit more than the design capacity...
Last edited by kokoko3k (2014-05-10 13:31:54)

emeres wrote:Depending on the technology used, one (or several) of the cells might be shorted or almost shorted. Another reason might be wrong measurement [circuit] from either battery or laptop side. And the simplest reason would be that the laptop/battery was produced some time ago, depending on type of technology used, certain batteries lose significant amount of capacity over time (even if unused). Since it is brand new, get in touch with your supplier and get at least the battery exchanged.
If you try to discharge it first, do fully discharge it using LEDs or some other low current load until voltage drops to approximately 10% of nominal voltage, and then recharge it not extending 110% of time it needed to be fully charged Repeating this cycle might and does help with certain types of batteries. If I were you, I would not bother however and go get a replacement from the shop, unless it is really troublesome.
As for overcharge protection, there are usually thermal (usually the most important one), shortcircuit and overcharge (meaning overvoltage protection) protections built into the battery (usually one ic) and/or laptop.
None of that is applicable for Lithium Polymer or Lithium Ion batteries. They should never drop below 3 volts. Discharging them below that point will destroy them and risk a fire. Charging Lithium based batteries is also non trivial and requires tight monitoring of voltage and controls on current and time. Do not mess with LiPoly or LiIon, they truly represent a serious safety hazard if they are mistreated. I note that your suggestions and descriptions of shorted cells are applicable to some non Li technologies; notably Nickle based batteries (Nickle Cadmium, Nickle Metal Hydride, etc...) In general, those are not found in modern laptops because of their toxicity and relatively low energy density as compared to LiPoly.
http://www.empirerc.com/liposafety.htm
http://www.rcpro.org/net/ThreadView.aspx?threadid=260
http://magazine.sfpe.org/content/lithiu … ry-hazards
http://www.datasheetdir.com/BQ29400+download
http://batteryuniversity.com/learn/arti … _batteries
http://www.batteryuniversity.com/learn/ … ith_li_ion
Last edited by ewaller (2014-05-09 03:00:19)

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Did the third-party battery ever work properly? If not, return it. If you post the brand or vendor of that battery, perhaps we can direct you to another model that may do better. If the battery came from an auction site, i would be very leery of it. Lots of reports of counterfeit batteries that simply don't work.
the date/time issues are due to a dead internal backup battery. Many Powerbooks ave the same issue but continue to work. New inernal batteries are nearly impossible to come by except for the latest PBs, and require a major teardown to replace.
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When I plug in the AC adapter (original HP 18.5V 65 watt adapter that came with the unit) the AC adapter light LED (located next to the AC adapter plug-in port) turns white momentarily and then turns amber, which indicates that the battery is charging.   This is supposedly normal.
When the battery reaches 100% charge, the indicator light turns white again, and remains a steady white, which means that the computer is connected to external power, but the power icon in the taskbar area still shows just the battery only icon and not the battery/plug icon. The operating system does not recognize that the computer is connected to external power and thinks that it is running on battery power only.
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Hi,
I see that a full charge results in only 51% of the battery capacity. Your battery is going south. It would be great if you happen to know someone with an HP power adapter like yours to plug in to your noetbook. The AC adapter output is within 10% of 18.5 volts so it is OK. I suspect a charging and power management control chip failure on the system board is causing the issue.
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erico
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

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Hi i have upgraded my laptop to 190mb ram,and latest bios, installed a 20gb disk and am now running windows xp.
Since putting xp on i lost the battery monitor utility.
I mostly use the laptop from the mains supply.
Now it wont run on the battery at all, i get about 40 seconds then windows shuts down.
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or
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Hi
How old is your battery?
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I had my old thread archived, so i had to start a new one.
Basically, after having my HD replaced by an Apple repair centre, i couldn't get my charger to work.
Plugging the barrell in would result in no light coming on, and the battery would not charge. However, with the barrell plugged in, the battery wouldn't lose charge either. Without the AC plugged in, the battery dies pretty quickly.
Today, after a little jiggling about, i have managed to get the LED on the AC barrell to come on-it has charged the battery 100%. However...the barrell LED has stayed Orange, despite being on 100%. I know for a fact if i unplug the barrell, it'll be a good few days before i can get it to connect and charge properly again. If i remove the AC it will be flat in about 30 minutes.
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One way to get more information about your battery: Click on the little blue apple, then "About this Mac">More Info. Under "Hardware" click on "Power" and it will tell you all about your battery.
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If the battery seems good, and you think the charger is also good, then there may have been some damage or dislodging of the DC In Board during the repair. I think this could cause the types of problem that you are having. If that was done during the repair, the repair center should be willing to fix it.
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When the ipod is connected to the computer, I can see the menus, scroll through everything. But one I disconnect it from the computer...NOTHING. can't get it to turn on, reset, nothing.
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Laptop battery "charging" but stuck at 0%

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