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Then contact Bill with a Private Message
Need a new Battery
Need a new Battery
Hi,
I have a T61p and a few other T61 15.4 inch before that and have gone through many batteries in its 10 years live.
I bought a 9 cell extended battery on Amazon a year ago and is has declined in capacity steadily, at which point now it is hardly usable and the OS considers it as broken (less than 40% capacity left)
Is there a way to tell good batteries from crappy ones? Is one year use all I will get out of any "new" battery? Are there some that give you warranty to make sure they last longer?
Which types do I have to look for for this type of 15.4 inch T61? There are seemingly a million different types around and it is hard to know which one will fit and which ones will not.
Do the 14 inch T61 types have different batteries or the same ones?
These questions always concern the extended 9 cell type.
I have a T61p and a few other T61 15.4 inch before that and have gone through many batteries in its 10 years live.
I bought a 9 cell extended battery on Amazon a year ago and is has declined in capacity steadily, at which point now it is hardly usable and the OS considers it as broken (less than 40% capacity left)
Is there a way to tell good batteries from crappy ones? Is one year use all I will get out of any "new" battery? Are there some that give you warranty to make sure they last longer?
Which types do I have to look for for this type of 15.4 inch T61? There are seemingly a million different types around and it is hard to know which one will fit and which ones will not.
Do the 14 inch T61 types have different batteries or the same ones?
These questions always concern the extended 9 cell type.
-
- Senior Member
- Posts: 951
- Joined: Fri Oct 11, 2013 7:45 pm
- Location: North Ridgeville, Ohio, United States
Re: Need a new Battery
Your best bet is to keep an eye out for used Panasonic cells here or on eBay. They last the longest in terms of cycles and capacity degradation over time/cycles.
The Panasonic 9 cell batteries I have in my T601F and the wife's T61p are both coming up on 10 years old now, and they both hold 85-90% what they did when they were brand new - with several hundred cycles on them.
The 15.4" widescreen T61 uses the same battery as the T60 (all flavors) and the T500. The 14.1" widescreen T61 and T400 battery will not work.
The Panasonic 9 cell batteries I have in my T601F and the wife's T61p are both coming up on 10 years old now, and they both hold 85-90% what they did when they were brand new - with several hundred cycles on them.
The 15.4" widescreen T61 uses the same battery as the T60 (all flavors) and the T500. The 14.1" widescreen T61 and T400 battery will not work.
Daily: T25 | W520 i7-2860QM·Quadro 2000m·IPS FHD | T420 i7-2640M·NVS 4200m·IPS FHD | X220 i7-2640M·IPS FHD | T601F T9900·NVS 140M·LED UXGA
Wife's: T61p T9500·FX570m·WUXGA | X220T i7-2640M
Others: T61p·61·43·42p|X41T·24·23·22|G41|A31p·22m|i1200|TransNote|380D|365XD|701C|755C
Wife's: T61p T9500·FX570m·WUXGA | X220T i7-2640M
Others: T61p·61·43·42p|X41T·24·23·22|G41|A31p·22m|i1200|TransNote|380D|365XD|701C|755C
Re: Need a new Battery
Thanks for the tip, any idea how I can find a panasonic cell on ebay? I have tried to filter for it, but had no success so far.
Does anybody have a product number that is a battery with a panasonic cell so I can look for it?
Does anybody have a product number that is a battery with a panasonic cell so I can look for it?
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- SuperUserGeorge
- Posts: 16389
- Joined: Sun Feb 25, 2007 11:28 am
- Location: Brodheadsville, Pennsylvania, USA
Re: Need a new Battery
92P1133 is one of the FRUs for a 9-cell Panasonic.
I'd make sure to confirm with the seller that is the *exact* FRU of the battery that you're getting.
I'd make sure to confirm with the seller that is the *exact* FRU of the battery that you're getting.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)
Cheers,
George (your grouchy retired FlexView farmer)
AARP club members:A31p,T43pSF
Abused daily: T61p
Work in progress: X60T
PMs requesting personal tech support will be ignored.
Cheers,
George (your grouchy retired FlexView farmer)
AARP club members:A31p,T43pSF
Abused daily: T61p
Work in progress: X60T
PMs requesting personal tech support will be ignored.
Re: Need a new Battery
Why ebay?
Looky here, I have only one new Panasonic left, all the rest are Sanyo.
viewtopic.php?f=11&t=125591
EDIT:
FRU on the labels says 42T4620
Looky here, I have only one new Panasonic left, all the rest are Sanyo.
viewtopic.php?f=11&t=125591
EDIT:
FRU on the labels says 42T4620
Dailies:
X230 - travel / garage
W700 - workhorse
R600 (R500 mobo inside R60 chassis) - daily
600x w/i7 board - thing to admire
Collectibles:
T43, Z60t, G41, R30, R50e, R61i, A31p, T23
Under construction:
R52p, T22, A22m, R40, T30, Z61m
X230 - travel / garage
W700 - workhorse
R600 (R500 mobo inside R60 chassis) - daily
600x w/i7 board - thing to admire
Collectibles:
T43, Z60t, G41, R30, R50e, R61i, A31p, T23
Under construction:
R52p, T22, A22m, R40, T30, Z61m
-
- Admin Emeritus
- Posts: 19730
- Joined: Mon Sep 18, 2006 5:17 am
- Location: Mt. Cobb, PA
- Contact:
Re: Need a new Battery
Panasonic 9-cell: FRU=92P1133, ASM=92P1134 (cells made in China, assembled in China)
Panasonic 9-cell: FRU=42T4620, ASM=92P1134 (cells made in Japan, assembled in China), THE best!!!!
They DO have the same ASM-number.
Panasonic 9-cell: FRU=42T4620, ASM=92P1134 (cells made in Japan, assembled in China), THE best!!!!
They DO have the same ASM-number.
Lovely day for a Guinness! (the Real Black Stuff). And pigs CAN fly!
Check out The Boardroom for Parts, Mods and Other Services.

Check out The Boardroom for Parts, Mods and Other Services.
Re: Need a new Battery
This is curious. I have a 41++ that I paid good money for when I got it here in Japan (it was one of the last unopened box batteries complete with the seal intact). It's SANYO cell, but performs wonderfully (only 14% wear in one year) and the FRU is also 42T4620. I wonder if Panasonic and Sanyo cells were interchangeable designation.wujstefan wrote: ↑Mon Feb 12, 2018 3:23 amWhy ebay?
Looky here, I have only one new Panasonic left, all the rest are Sanyo.
viewtopic.php?f=11&t=125591
EDIT:
FRU on the labels says 42T4620
Also have a troublesome (but not totally dead) Sanyo (?) 4-cell and a 65% health 4-cell, both Panasonic. So perhaps there is just very little consistency.
Last edited by madicetea on Mon Feb 12, 2018 11:56 am, edited 1 time in total.
Greetings from Tokyo,
MadIceTea, IBM Thinkpad Enthusiast
Selling: piano s30, headless PC110
Daily Driver Thinkpads: X250 16gb 3TB FHD, X61 T9300 SXGA+, x2001 AFFS i5-530
Occasional Use: PC110 20MB
Past: 701Cs German, 535/X, 760E/XL, i-series 12/14xx, R60e, X60, X61, T60, T61, X121e
MadIceTea, IBM Thinkpad Enthusiast
Selling: piano s30, headless PC110
Daily Driver Thinkpads: X250 16gb 3TB FHD, X61 T9300 SXGA+, x2001 AFFS i5-530
Occasional Use: PC110 20MB
Past: 701Cs German, 535/X, 760E/XL, i-series 12/14xx, R60e, X60, X61, T60, T61, X121e
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- Admin Emeritus
- Posts: 19730
- Joined: Mon Sep 18, 2006 5:17 am
- Location: Mt. Cobb, PA
- Contact:
Re: Need a new Battery
As a matter of fact, Panasonic bought up Sanyo for its batteries in 2009 or 2010
https://www.cnet.com/news/panasonic-fin ... -of-sanyo/
https://www.cnet.com/news/panasonic-fin ... -of-sanyo/
Re: Need a new Battery
Oh, that is quite interesting news.
Thank you.
Thank you.
Greetings from Tokyo,
MadIceTea, IBM Thinkpad Enthusiast
Selling: piano s30, headless PC110
Daily Driver Thinkpads: X250 16gb 3TB FHD, X61 T9300 SXGA+, x2001 AFFS i5-530
Occasional Use: PC110 20MB
Past: 701Cs German, 535/X, 760E/XL, i-series 12/14xx, R60e, X60, X61, T60, T61, X121e
MadIceTea, IBM Thinkpad Enthusiast
Selling: piano s30, headless PC110
Daily Driver Thinkpads: X250 16gb 3TB FHD, X61 T9300 SXGA+, x2001 AFFS i5-530
Occasional Use: PC110 20MB
Past: 701Cs German, 535/X, 760E/XL, i-series 12/14xx, R60e, X60, X61, T60, T61, X121e
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