From: "Jon" <ecs-t6x@2rosenthals.com>
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To: "eCS ThinkPad T60/61 Mailing List" <ecs-t6x@2rosenthals.com>
Date: Fri, 09 Apr 2010 22:21:14 -0700 (PDT)
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Subject: Re: [eCS T60/T61] T61 dead battery

On Mon, 05 Apr 2010 21:27:12 -0400 Lewis G Rosenthal wrote:

Lewis:

Following up on my query:

>A good link for you:
>
>http://batteryuniversity.com/parttwo-34.htm

Thanks for the link, some good advise there that I was unaware of.

>> By booting into XP I find that it is detected as a dead battery.  I al=
so discovered that there 
is a 
>> power option app that allows the user to perform maintenance tasks on =
the battery to help it 
>> maintain a longer life.  

>
>While there are only a handful of manufacturers of the various cells 
>(Sanyo, SONY, Panasonic, Hitachi=3F, and a couple more which escape me, =

>now), the electronics in the battery are really the only difference 
>between the branded ones and the aftermarket ones, AFAIK.
>

As a followup, I purchased a battery online from a 3rd party dealer.  It'=
s a Sanyo, as was my 
original.  It cost about 45% less than a Lenovo battery.  And, under XP t=
he power app (as well as 
thinkvantage message center) give me alarms and warning messages that my =
battery is not authenic.  
What a PITA, I had to disabled that stuff and downloaded a 3rd party batt=
ery meter.

And now the power app will no longer perform "battery maintenance tasks" =
to help extend the life of 
the battery.  So your comment that "the electronics in the battery...." i=
s more important than when 
I first read it.

So, for lurkers, if you have a T61 you may want to balance the cost savin=
gs of a 3rd party battery 
against the loss of Lenovo's thinkvantage battery maintenance feature.

Jon