Question about IBM ThinkPad T20 2647 Notebook

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I need to replace CMOS battery and want to be sure I have the right battery, however IBM says they did not make the model I have (2647-4MU S/78-MVHRX) How is this possible? Are the batteries from this model the same?

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Any Standard Battery should work

look here http://www.computerhope.com/issues/ch000239.htm

Get any battery that is 3v and the same shape/size

If you found this solution helpful , please rate my solution below

Kind Regards
1234s282

Posted on Jul 01, 2009

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I want to replace the CMOS Battery in IBM 29R9284 mother board. But I am not able to locate the CMOS Battery in the mother board. Can someone guide me on this to know whether any CMOS Battery is installed...


Hi, here you can download drivers and a manual:

http://support.lenovo.com/en_US/?sitestyle=lenovo&lndocid=MIGR-56602

You can use the autodetect function in seach for your model.

IBM has changed name to lenovo.

The cmos battery look like this:


ghost2233_30.jpg
Here is a youtube video that shows you how:

http://www.youtube.com/watch?v=r4fDSQap2Qo&playnext=1&list=PLD78BD157A0D15923


Hope this will help you.

Aug 21, 2011 | IBM 29R9284 Motherboard

2 Answers

I keep getting ;messages saying I need to replace the internal battery 601/ Can I buy that online?


This sounds like the error you would get on an IBM thinkpad or Lenovo laptop.
There are third party sources for these all over the place.
As an example, I own an IBM thinkpad model A20M.
If I google a20m CMOS battery, I am sure to find a plethora of sources online.
Being Canadian, I go to Ever Corperation at www.evercorp.com for any replacement batteries I need.
Make sure when you order your battery that you aren't ordering the main battery pack, and are indeed ordering the CMOS battery.
Installation instructions should arrive with the battery.

Jun 04, 2011 | Computers & Internet

2 Answers

How to install CMOS Batterie


  1. loosen the scew 1but do not remove it: look at the picture below
mabroukmedal_1.gif 2. free the connector of the bacup battery:
mabroukmedal_2.gif
3. install the new backup battery

Nov 08, 2010 | IBM ThinkPad 600X Notebook

1 Answer

How to replace the CMOS Battery in an IBM Thinkpad r31


hi, the cmos battery is usually located on motherboard if you want to replace it or reseat it you can download the user manual from http://www-307.ibm.com/pc/support/site.wss/product.do?brandind=10&familyind=50280&machineind=183389&operatingsystemind=49979&template=/productselection/landingpages/onlinePublicationsLandingPage.vm&validate=true

on the page you have to select the model no and then you can see the screenshots of how to replace the parts.

Feb 26, 2010 | IBM ThinkPad R31 2656 Notebook

2 Answers

I have an IBM Thinkpad A31 with a power-on password that prevents me from using the laptop. Do you have a solution to take off the password without buying parts at the local Radio Shack that need to be...


Is it a Bios Password or a Hard Drive Password???
If a bios pass... you need to find the CMOS battery (think it's under your keyboard on that model, though not sure offhand).. Remove the battery.. Make sure battery is removed and not plugged in.. THen Hold Down The Power On Button For 30 Seconds.. Reattach the CMOS battery..
Boot Up The Laptop..
If Still Pass Locked Then You Have A Security Chip... this is embedded onto the mainboard and You would then need to replace the board (unless you know someone who can remove it and reflash it)..

Nov 15, 2009 | IBM ThinkPad A31 Notebook

1 Answer

IBM t42 comes on, beeps twice and goes off, connected and battery


Yes it is the fan, get a can of compressed air and clean the air vents and the CPU fan with that, also i would check into the CMOS battery as it could be dead and needs replacing.
As the laptop starts up hit F1 when you see the IBM logo and check the date and time, that will be a clear indicator IF the CMOS battery is dead because it will not be the right date and time, it should however let you into windows if you put the date and time right (it may take a couple of attempts)


Good luck

Jun 19, 2009 | IBM ThinkPad T42 Notebook

2 Answers

Starting ibm 600e


Hi there.
Errors 161, 192, 163.
All three of these errors are connected to the back up battery.
To resolve this problem:
1. open memory flap on base of laptop (small philips screwdriver required)
2. find the small connector with 1 black & 1 red wire coming from it.
3. disconnect above connector and gently pull the Red&black wires. The backup battery should just pull out from under the casing.
4. get replacement battery. Either
a. call IBM spares (07900 247 490 in UK) and ask for FRU:
02K6502. UK price is about £8 + £15 delivery + VAT.
b. if comfortable with soldering iron: Carefully open the packaging on the backup battery using a sharp knife.
Remove the solder tags from the battery (these are spot welded so need to be cut/broken off). Buy a new CR2025 battery from any computer shop, jeweler, or camera shop.
Using electrical tape, insulate all round edge of battery
Solder the leads onto the new battery - note polarity. Red wire to +, black wire to -.
Using more insulating tape, wrap battery so that all exposed metal is covered.
5. put new battery into laptop (reverse steps 1-3)
6. start up computer, error 192 has gone, but still shows 161, 163. Select OK.
7. reset date & time, and OK
8. when screen shows 'O / I' restart laptop using on/off switch at side.

Good luck and thanks for using FixYa!!

Mar 05, 2009 | IBM ThinkPad T21 Notebook

1 Answer

IBM ThinkPad 600 Hdd error


make sure the Hdd is well connected , and hope its not an HDD failure. Might also want to check see if you didn't disconnect any other wires by changing the battery.

Feb 28, 2009 | IBM ThinkPad 600E 2645 Notebook

1 Answer

IBM xseries 205, Model 8480-43X Memory upgrade an POST BEEP


Those beeps mean that your RAM is not functioning. Are you sure you got the right upgrade type. Sometimes it'll fit into socket but won't work because of speed. Or just try reseating the modules.

Jan 14, 2009 | IBM eserver xSeries 205 8480

1 Answer

Problem with ma ibm thickpad


loose the back of yr ibm if u cant find the cmos battery then u might need to disasemble the whole system carefully under the key board i think thats where th cmos battery will be.
Note removing cmos battery in some systems dont clear cmos password u have to do some additional work to remove yr password. for the battery prob try using a diff battery to be sure what ur prob is.
thank u

May 26, 2008 | Computers & Internet

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