T40 Battery capacity only 29Wh, improve in friend's T42? PIC

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frankiepankie · #1 Post by **frankiepankie** » Sat Oct 27, 2007 1:31 pm

Hello
My T40's battery has lost capacity in the last years. I checked it with IBM MaxiMiser.

As you can see, the health is red, and the remaining capacity is 20.98Wh.

I don't have the button "Improve battery health" on my T40, but a friend with a T42 has it. Will it help if he insert my battery in his T42 and runs the "Improve battery health" wizard?

A screenshot from the IBM MaxiMiser tool on my friend's T42

Thanks

sktn77a · #2 Post by **sktn77a** » Sat Oct 27, 2007 1:38 pm

This basically deep discharges the battery and recharges a couple of times to recalibrate the battery electronics. It may bring you battery up a little but probably not much. Three years from a battery is pretty god.

AdaSch · #3 Post by **AdaSch** » Sat Oct 27, 2007 2:14 pm

Hi,

look on my 240 cycles,

br

frankiepankie · #4 Post by **frankiepankie** » Sat Oct 27, 2007 3:24 pm

I can't see the battery details there.

snessiram · #5 Post by **snessiram** » Sat Oct 27, 2007 6:46 pm

I have the exact same problem as frankiepankie, maybe it is related to the dutch version only? It's however possible to lookup most of the info through "Thinkpad Configuratie" and then menu "Systeeminformatie" and tab "Batterij-informatie".

#6 Post by **bill bolton** » Sat Oct 27, 2007 8:12 pm

AdaSch wrote:look on my 240 cycles,

Look at your battery manufacture and first use dates! 2006-03-23 and 2006-05!

As has been said many, many times here, rechargable Li-Ion battery technology degrades with time whether you use it or not.

frankiepankie's battery first use date is over three years ago, so the numbers he is getting are not at all surprising.

Cheers,

Bill B.

#7 Post by **carbon_unit** » Sat Oct 27, 2007 9:40 pm

Click on the little arrow next to "Battery details..." for details.

dr_st · #8 Post by **dr_st** » Sun Oct 28, 2007 12:22 am

bill bolton wrote:As has been said many, many times here, rechargable Li-Ion battery technology degrades with time whether you use it or not.

With that said, the rate of degradation is not necessarily constant, and may vary greatly from battery to battery. I've seen batteries that lost just 5Wh over a span of two years, and others that lost around 20Wh (even though they have been actually used less).

ulrich.von.lich · #9 Post by **ulrich.von.lich** » Sun Oct 28, 2007 2:53 am

bill bolton wrote:As has been said many, many times here, rechargable Li-Ion battery technology degrades with time whether you use it or not.

So is it better to buy a used battery manufactured in 2007 than a brand new sealed one but made in 2005? Between usage and time, which one will make it degrade faster?

frankiepankie · #10 Post by **frankiepankie** » Sun Oct 28, 2007 3:28 am

carbon_unit wrote:Click on the little arrow next to "Battery details..." for details.

Hehehe thanks, now i can view the information about my battery.

AdaSch · #11 Post by **AdaSch** » Sun Oct 28, 2007 4:18 am

You have right Bill,

,

but, new t43 power manager have this option

and note from help

t40 don't have this option...

br

gunston · #12 Post by **gunston** » Sun Oct 28, 2007 9:03 am

AdaSch wrote:Hi,

look on my 240 cycles,

br

your battery is amazing!!!!

frankiepankie · #13 Post by **frankiepankie** » Sun Oct 28, 2007 3:40 pm

Nice information, but the big question stays:

Will it help if i let my T40 battery recondition in a T4x model which supports reconditioning (T40 doesn't support it).

#14 Post by **bill bolton** » Sun Oct 28, 2007 4:20 pm

frankiepankie wrote:Will it help if i let my T40 battery recondition in a T4x model which supports reconditioning (T40 doesn't support it).

If you mean will your battery condition change significantly, the answer is no. It might change a little, but your battery is just old!

You can manually "recondition" your battery in your T40 if you want to try.

Fully charge the battery, fully discharge the battery (that is, until your T40 shuts down) and then fully charge it again. That's all the battery reset option does in the T42/43 models.

Cheers,

Bill B.

frankiepankie · #15 Post by **frankiepankie** » Sat Dec 29, 2007 6:25 pm

My battery is slowly going to death.

It is only 19.71Wh

I can still work for 1:45 with the "Super Power Saver" activated

Some specs about my battery:

First use dat: 2004-02
Design capacity 47.52Wh
Manufacturer name: SANYO
Battery name (FRU Part number): IBM-08K8193
Full charge capacity: 19.71Wh

Maybe over a while i go look for an other battery, this one is still working for 1h 45min, so why fix it if it ain't broken

gunston · #16 Post by **gunston** » Sat Dec 29, 2007 7:04 pm

Looks like Panasonic Battery is much more better than Sanyo

dr_st · #17 Post by **dr_st** » Tue Jan 01, 2008 10:51 am

gunston wrote:Looks like Panasonic Battery is much more better than Sanyo

I second that. My Sanyo battery on T42 has degraded to about 55-60% of its design capacity, while my girlfriend's Panasonic battery on X32 still holds over 80% of the design capacity, with a much higher cycle count and an insignificant age difference.

AdaSch · #18 Post by **AdaSch** » Tue Jan 01, 2008 11:43 am

Hi,

panasonic have many types battery.

look on my almost 300 cycles

but my second panasonic battery is death

br

frankiepankie · #19 Post by **frankiepankie** » Tue Jan 01, 2008 12:38 pm

WOW!

Panasonic is indeed, a LOT better.

292 Cycles, and still 44Wh of the 53Wh remaining

That is amazing

Puppy · #20 Post by **Puppy** » Tue Jan 01, 2008 12:50 pm

gunston wrote:Looks like Panasonic Battery is much more better than Sanyo

I can confirm that. I have X31 with Panasonic and R51 with Sanyo. The battery in X31 has more than 100 cycles but still 85% of original capacity while the one in R51 is newer but below half of original capacity with 28 cycles only.

frankiepankie · #21 Post by **frankiepankie** » Tue Jan 01, 2008 1:54 pm

WOW!

Panasonic is indeed, a LOT better.

292 Cycles, and still 44Wh of the 53Wh remaining

Holy [censored]

that is amazing

gunston · #22 Post by **gunston** » Tue Jan 01, 2008 6:12 pm

Panasonic: Ideas for life ~

mpcook · #23 Post by **mpcook** » Tue Jan 01, 2008 8:19 pm

frankiepankie wrote:WOW!

Panasonic is indeed, a LOT better.

292 Cycles, and still 44Wh of the 53Wh remaining

That is amazing

Yes, I just took a look at my X32 battery and it's 86% (44.5 9Wh out of 51.83 Wh) after 186 cycles, first use date 2005 09. It is Panasonic. The Sanyos in my T23's and T40 suck, the batteries are both almost useless.

Mike

AdaSch · #24 Post by **AdaSch** » Thu Jan 17, 2008 8:11 am

Hi,

look on 310 cycles! capacity rising up!

BR

frankiepankie · #25 Post by **frankiepankie** » Fri Jan 18, 2008 4:50 pm

Nice!
Panasonic batteries rock!

310 cycles and IBM Power manager software says "Your battery is in good condition"

flrthinkpad · #26 Post by **flrthinkpad** » Sat Jan 19, 2008 5:00 pm

That's interesting because M a t s u s h i t a (Panasonic) is the black sheep of the Japanese Li-ion industry with shrinking market share, losing money and constantly rumored to be exiting Li-ion business. (I consult on battery technology once in a while.)

Sanyo is the global market leader......

frankiepankie · #27 Post by **frankiepankie** » Wed Aug 13, 2008 8:00 am

Wow

Just bought a 2nd hand T42, put the battery in my T40 to look up its cycles.

That are very much battery cycles

And other news, remember i said in the startpost that my T40 battery as going worser and worser, but a while ago i noticed a weird thing.

My full charge capacity was something like 14Wh, but after i discharged it completely (till the TP died) and charged it, it went up

kajencik · #28 Post by **kajencik** » Wed Aug 13, 2008 4:44 pm

This is possible, I manged to restore a battery capacity a bit on my R40 and also moved full charge capacity of my ultrabay battery from about 12 to 16Wh (It has 22Wh design capacity), but IMHO you can't trust such a battery anymore, so it's definitely a time for a new one.

#29 Post by **underclocker** » Wed Aug 13, 2008 6:53 pm

Just a sobering note to all the posts with near-new capacity on batteries with many cycles. If you go through the same rundown procedure that others use to restore life, you might find that your battery life will drop significantly. Just as sometimes it's miscalibrated in one direction, it can be miscalibrated in the other, too.

I've seen some "good" batteries loose half their rating in a couple of deep discharges. Of course, this makes more sense than a super battery that is unaffected by time or use!

sparta.rising · #30 Post by **sparta.rising** » Thu Aug 14, 2008 12:15 am

My normal battery

Another

And my ultrabay battery

I had a panny that had amazing lifes for the # of cycles, but when I reconditioned it became more realistic... and then batteryrefill.com stole it. Jerks.

T40 Battery capacity only 29Wh, improve in friend's T42? PIC

T40 Battery capacity only 29Wh, improve in friend's T42? PIC

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