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T61 Battery Has Greater Remaining Capacity Than Design Capacity?

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olex126
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T61 Battery Has Greater Remaining Capacity Than Design Capacity?

#1 Post by olex126 » Mon Feb 20, 2017 3:15 pm

Hi Guys and Gals!

Have not seen this before... A fairly new Sanyo 42T4619 for a T61...

Design Capacity: 84.24 Wh

Remaining Capacity: 86.86 Wh

This after a half dozen deplete-recharge cycles over a few months!

Have I found the "Holy Grail" of batteries.... one that not only never goes down, but increases it's capacity as it gets used? :D :D :D

Anyone ever had this before?

Thanks. Regards.
Dave
Previous & Collection Thinkpads: 701C A22m A30/A31p T23p x2 T30 T41 X31 various 750's 760's & 390's.

Test Benches: X41T, X60T & X61T's, various T42p-T43p's, x200 x201 x220T x230 T520 W530 T601F LED (X9000/8Gb/250SSD/W7 U)

DD: P50

"Life Is A Journey...Enjoy The Ride!"

TPFanatic
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Re: T61 Battery Has Greater Remaining Capacity Than Design Capacity?

#2 Post by TPFanatic » Mon Feb 20, 2017 3:19 pm

I have a T430 70+ 6 cell with similar quirk. 58wh full charge capacity, 54wh design. :shock:

dr_st
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Re: T61 Battery Has Greater Remaining Capacity Than Design Capacity?

#3 Post by dr_st » Mon Feb 20, 2017 4:56 pm

It's actually pretty common. Unfortunately it does not last forever. :)
Thinkpad 25 (20K7), T16 Gen 3 (21MQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad

olex126
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Re: T61 Battery Has Greater Remaining Capacity Than Design Capacity?

#4 Post by olex126 » Mon Feb 20, 2017 7:26 pm

Ok thanks dr_st.....

DRATS :( :(

Was hoping I would NEVER have to buy another T6x battery :banana: :banana: :banana:

In fact, I WAS planning on harnessing the exponentially growing power of this Thinkpad battery to

run the washer, dryer, dishwasher, 2 x Big-Screen TV's, Internet Router, electric chainsaw,

electric lawnmower, electric can-opener, and with any excess power after that, charge the

portable generator battery and convert some to 220V for the arc welder.....

Now.... Not so Much ! :( :( :(

Previous & Collection Thinkpads: 701C A22m A30/A31p T23p x2 T30 T41 X31 various 750's 760's & 390's.

Test Benches: X41T, X60T & X61T's, various T42p-T43p's, x200 x201 x220T x230 T520 W530 T601F LED (X9000/8Gb/250SSD/W7 U)

DD: P50

"Life Is A Journey...Enjoy The Ride!"

ajkula66
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Re: T61 Battery Has Greater Remaining Capacity Than Design Capacity?

#5 Post by ajkula66 » Mon Feb 20, 2017 7:32 pm

LOL.

Dave, can you send me some of *whatever* you've been drinking/smoking/ingesting these days? I literally threw up my coffee from laughing at your post...
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

my music if anyone cares: https://www.youtube.com/@TheWaterMemory

PMs requesting personal tech support will be ignored.

olex126
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Joined: Tue May 29, 2007 3:46 pm
Location: London, Ontario, CANADA

Re: T61 Battery Has Greater Remaining Capacity Than Design Capacity?

#6 Post by olex126 » Mon Feb 20, 2017 9:11 pm

Sorry George....didn't mean to make you gag like that!

The secret is the Canadian maple syrup....well... maybe not the syrup itself...

The trick is you have to smoke it, not pour it on pancakes!

I've just completed a negotiation with St.Thomas Energy, and they've agreed I can plug into their grid and power the street lights on my street for the next month!

And all this from a new Thinkpad battery...best investment I've ever made!

Outta' here! :jhem: :jhem: :jhem:

Dave
Previous & Collection Thinkpads: 701C A22m A30/A31p T23p x2 T30 T41 X31 various 750's 760's & 390's.

Test Benches: X41T, X60T & X61T's, various T42p-T43p's, x200 x201 x220T x230 T520 W530 T601F LED (X9000/8Gb/250SSD/W7 U)

DD: P50

"Life Is A Journey...Enjoy The Ride!"

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