I got a new battery for my laptop but it never fully charges.

I have done as the instruction says, charged and fully discharged
several times but the power indicator never says more then
87 % (well, the first time it said 87, then 90, then 87, 87) .

Discharging takes aroun 4 hours with the screen on and the
disk activity lamp flashing about every 5:th second so I
hope the battery is sound. After charging for 24 hours
the battery is not warm so I suppose the charger is not
putting a lot of current through the battery to charge those
last 13 %.

But I am not sure. Can anybody tell me if I can trust the
battery? If the battery is OK, is there any way to make
the system show 100 % instead of 87 when the
battery is fully charged?

The battery is Panasonic 4460 but I could not find
anything about the problem on their home site

Thanks for any answer
Anders

Did you calibrate the new battery for use in _your_ laptop, as per the
instructions of the laptop manufacturer?
Steve

"Anders F" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>I got a new battery for my laptop but it never fully charges.
>
> I have done as the instruction says, charged and fully discharged
> several times but the power indicator never says more then
> 87 % (well, the first time it said 87, then 90, then 87, 87) .
>
> Discharging takes aroun 4 hours with the screen on and the
> disk activity lamp flashing about every 5:th second so I
> hope the battery is sound. After charging for 24 hours
> the battery is not warm so I suppose the charger is not
> putting a lot of current through the battery to charge those
> last 13 %.
>
> But I am not sure. Can anybody tell me if I can trust the
> battery? If the battery is OK, is there any way to make
> the system show 100 % instead of 87 when the
> battery is fully charged?
>
> The battery is Panasonic 4460 but I could not find
> anything about the problem on their home site
>
> Thanks for any answer
> Anders
>
>

Yes, I only have one laptop

Anders

"Og" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Did you calibrate the new battery for use in _your_ laptop, as per the
> instructions of the laptop manufacturer?
> Steve
>
> "Anders F" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>>I got a new battery for my laptop but it never fully charges.
>>
>> I have done as the instruction says, charged and fully discharged
>> several times but the power indicator never says more then
>> 87 % (well, the first time it said 87, then 90, then 87, 87) .
>>
>> Discharging takes aroun 4 hours with the screen on and the
>> disk activity lamp flashing about every 5:th second so I
>> hope the battery is sound. After charging for 24 hours
>> the battery is not warm so I suppose the charger is not
>> putting a lot of current through the battery to charge those
>> last 13 %.
>>
>> But I am not sure. Can anybody tell me if I can trust the
>> battery? If the battery is OK, is there any way to make
>> the system show 100 % instead of 87 when the
>> battery is fully charged?
>>
>> The battery is Panasonic 4460 but I could not find
>> anything about the problem on their home site
>>
>> Thanks for any answer
>> Anders
>>
>>
>
>

> Yes, I only have one laptop
>

The only danger, and I chose that word carefully, is that the laptop keeps
charging a fully charged Li-Ion battery. That's A Very Bad Thing and could
quickly get exciting, something that you don't want.

From your good description IMO the problem is the charging circuit and the
function that measures the remaining charge. Apparently the circuit doesn't
know about your new battery, and the calibration function isn't making the
circuit any smarter. I have to assume that you didn't buy the battery from
the laptop manufacturer, and that's probably the root cause of the problem.
It should be solvable so check with the battery retailer, they have
certainly dealt with this before.

-John O

You say "yes" to the calibration of the battery. Really? You went into the
bios and ran the battery calibration routine that most laptops now have to
"reset" the battery charge system? Simply running the battery down and
recharging is NOT a battery calibration.


"Anders F" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Yes, I only have one laptop
>
> Anders
>
> "Og" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> Did you calibrate the new battery for use in _your_ laptop, as per the
>> instructions of the laptop manufacturer?
>> Steve
>>
>> "Anders F" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>>>I got a new battery for my laptop but it never fully charges.
>>>
>>> I have done as the instruction says, charged and fully discharged
>>> several times but the power indicator never says more then
>>> 87 % (well, the first time it said 87, then 90, then 87, 87) .
>>>
>>> Discharging takes aroun 4 hours with the screen on and the
>>> disk activity lamp flashing about every 5:th second so I
>>> hope the battery is sound. After charging for 24 hours
>>> the battery is not warm so I suppose the charger is not
>>> putting a lot of current through the battery to charge those
>>> last 13 %.
>>>
>>> But I am not sure. Can anybody tell me if I can trust the
>>> battery? If the battery is OK, is there any way to make
>>> the system show 100 % instead of 87 when the
>>> battery is fully charged?
>>>
>>> The battery is Panasonic 4460 but I could not find
>>> anything about the problem on their home site
>>>
>>> Thanks for any answer
>>> Anders
>>>
>>>
>>
>>
>
>

In the instruction that followed the battery, they said that running
down and recharging the battery is calibration. I had not thought
of checking the bios but when looking it did not have any
calibration routine (it is some years old). The bios does have a
battery page but it only shows the battery charge.
Of some reason the bios shows 95 % while I get 91 % when I
use the Power Options (well, it is better then the 87 % I got
last time).

Anders


"LVTravel" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> You say "yes" to the calibration of the battery. Really? You went into
> the bios and ran the battery calibration routine that most laptops now
> have to "reset" the battery charge system? Simply running the battery
> down and recharging is NOT a battery calibration.
>
>
> "Anders F" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> Yes, I only have one laptop
>>
>> Anders
>>
>> "Og" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>>> Did you calibrate the new battery for use in _your_ laptop, as per the
>>> instructions of the laptop manufacturer?
>>> Steve
>>>
>>> "Anders F" <(E-Mail Removed)> wrote in message
>>> news:(E-Mail Removed)...
>>>>I got a new battery for my laptop but it never fully charges.
>>>>
>>>> I have done as the instruction says, charged and fully discharged
>>>> several times but the power indicator never says more then
>>>> 87 % (well, the first time it said 87, then 90, then 87, 87) .
>>>>
>>>> Discharging takes aroun 4 hours with the screen on and the
>>>> disk activity lamp flashing about every 5:th second so I
>>>> hope the battery is sound. After charging for 24 hours
>>>> the battery is not warm so I suppose the charger is not
>>>> putting a lot of current through the battery to charge those
>>>> last 13 %.
>>>>
>>>> But I am not sure. Can anybody tell me if I can trust the
>>>> battery? If the battery is OK, is there any way to make
>>>> the system show 100 % instead of 87 when the
>>>> battery is fully charged?
>>>>
>>>> The battery is Panasonic 4460 but I could not find
>>>> anything about the problem on their home site
>>>>
>>>> Thanks for any answer
>>>> Anders
>>>>
>>>>
>>>
>>>
>>
>>
>
>

On Thu, 3 May 2007 09:37:21 +0200, "Anders F" <(E-Mail Removed)>
wrote:

>I got a new battery for my laptop but it never fully charges.
>
>I have done as the instruction says, charged and fully discharged
>several times but the power indicator never says more then
>87 % (well, the first time it said 87, then 90, then 87, 87) .
>
>Discharging takes aroun 4 hours with the screen on and the
>disk activity lamp flashing about every 5:th second so I
>hope the battery is sound. After charging for 24 hours
>the battery is not warm so I suppose the charger is not
>putting a lot of current through the battery to charge those
>last 13 %.
>
>But I am not sure. Can anybody tell me if I can trust the
>battery? If the battery is OK, is there any way to make
>the system show 100 % instead of 87 when the
>battery is fully charged?
>
>The battery is Panasonic 4460 but I could not find
>anything about the problem on their home site
>
>Thanks for any answer
>Anders
>

Is this indicated in Windows or the actual capacity meter on the
battery? If the latter,the problem lies with the battery and the
subject is out of place here. If the former, you need to calibrate
the battery with the OS.

> In the instruction that followed the battery, they said that running
> down and recharging the battery is calibration.

Sometimes it is...but many machines have special tools for this that are far
more accurate. Some older HP machines had a control panel tool for new
machines/batteries, so if it isn't in BIOS check with the manufacturer of
your machine.

-John O

> Is this indicated in Windows or the actual capacity meter on the
> battery? If the latter,the problem lies with the battery and the
> subject is out of place here. If the former, you need to calibrate
> the battery with the OS.

Get a life, you moron.

"NoConsequence" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On Thu, 3 May 2007 09:37:21 +0200, "Anders F" <(E-Mail Removed)>
> wrote:
>
>>I got a new battery for my laptop but it never fully charges.
>>
>>I have done as the instruction says, charged and fully discharged
>>several times but the power indicator never says more then
>>87 % (well, the first time it said 87, then 90, then 87, 87) .
>>
>>Discharging takes aroun 4 hours with the screen on and the
>>disk activity lamp flashing about every 5:th second so I
>>hope the battery is sound. After charging for 24 hours
>>the battery is not warm so I suppose the charger is not
>>putting a lot of current through the battery to charge those
>>last 13 %.
>>
>>But I am not sure. Can anybody tell me if I can trust the
>>battery? If the battery is OK, is there any way to make
>>the system show 100 % instead of 87 when the
>>battery is fully charged?
>>
>>The battery is Panasonic 4460 but I could not find
>>anything about the problem on their home site
>>
>>Thanks for any answer
>>Anders
>>
>
> Is this indicated in Windows or the actual capacity meter on the
> battery? If the latter,the problem lies with the battery and the
> subject is out of place here. If the former, you need to calibrate
> the battery with the OS.
>

The readings do vary, last full reading was 95 % in the bios and
91 % in the Power Options.
What capacity meter on the battery? I have not seen any such thing.
How do I calibrate a battery with the Windows?