Re: [Thinkpad] R40 charging problem

The A31 does too, just install the battery maximizer
It is a dead battery, you can bet on it.
How on earth can anyone sell a battery as "looks in mint condition"?
What does that have to do with whether it takes a charge?
There was an outfit in upstate NY that had literally thousands of 600 series
batterys, sold to them as "good used".
EVERY ONE WAS DEAD.
Enough said.
----- Original Message -----
From: "Oscar Farah" <ofarah@netzero.com>
To: <ofarah@netzero.com>
Cc: <magrode-news@tihlde.org>; <thinkpad@stderr.org>
Sent: Sunday, January 16, 2005 11:05 PM
Subject: Re: [Thinkpad] R40 charging problem

>
> I believe I was a little too hasty in my statement:
>
> "I believe the battery you got from eBay is dead as well!"
>
> Let me explain. This conclusion was based on two of the three data
elements you disclosed:
>
> Current: Changing between 0.00-0.01A << too low
> Voltage: Constantly on 11.64V <<?? need to know battery voltage
> Wattage: Changing between 0.00-0.06W << too low
>
> The charging current should be much higher than a value between 0 and 10
ma; 10 ma, and even more, would be a trickle charge rather than a full
charge. It appears that the battery resistance is so high that only <10 ma
can get through. The low current leads to the low power (wattage) transfer.
>
> The voltage being 11.64v (which may be the battery voltage) could
contradict the above assertion and lead to the conclusion that the charger
in the laptop is damaged. I am not familiar with the R40 but if the voltage
of its battery is equal to or larger than 11.64v then the charger in the
laptop is damaged and in that case, the solution would be to purchase an
auxilliary charger (~$20.00). I personally have a number of 560s and one A31
and none of those give me the detailed information your R40 gives. I hope
those values are correct!
>
> Oscar Farah
>
>
> Hi,
>
> I just got a two year old ThinkPad R40, and I'm pretty happy with it.
> There's just one little problem: It won't charge the batteries. The guy I
> bought it from said that this happened after he had left it unused in
> his closet for some months. Obviously a silly thing to do since the
> Li-ion batteries should be used regularly. I assumed that the battery
> was dead, and got an other one on Ebay. The problem is, this battery won't
> charge either.
>
> The machine seems to treat the two batteries a bit differently:
>
> 1. Original battery.
> With the original battery, it wouldn't start charging at all. The orange
> battery light came on, but the battery monitoring software stated "No
> activity". The remaining percentage stayed at 0 %, and there were no
> information regarding current, voltage or wattage.
>
>
> 2. Battery from Ebay.
> With this one, the orange battery light was lid and the monitoring
> software displayed "Charging". But now it has been "charging" for 30
> hours, and it is still at 0 %. It says that:
>
> "This battery was completely discharged and needs to be recharged. This
> may take 10 or more hours".
>
> With this battery I also got the following information:
>
> Current: Changing between 0.00-0.01A
> Voltage: Constantly on 11.64V
> Wattage: Changing between 0.00-0.06W
>
>
> None of the batteries become hot when I try charging them. I can't feel
> any change in temperature at all. From time to time the machine goes
> into hibernation mode during the early boot sequence. I've only seen
> this when using the AC adapter with the original battery inserted.
>
> I realise that I'm asking for much here, but if anyone has an idea of
> what might be wrong, I'd be really happy to hear about it.
>
>
> Regards,
> Magne Rodem
>
> --
> Magne Rodem
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Received on Mon Jan 17 01:19:47 2005