I'm receiving 071. CMOS Battery bad and 070. Real Time Clock Error on my IBM Thinkpad iseries laptop. Where can I get these batteries from?

You need a replacement battery for the CMOS system on your computer.

The CMOS system contains the BIOS settings configuration and also runs the real time clock. If the real time clock does not stay in sync, this can have a negative affect on your installed operating system ( for example, a windows computer will not allow ANY system updates if the difference between your system time date, and the update servers current time and date is offset for 24 hrs. or more)

The cmos battery is possibly at a critical voltage. Replace the battery and set the clock etc.

In that case replace the Cmos battery, usually underneath the keyboard, and enter the BIOS to reset the clock. Select default settings in the menu.
Hope that helps.

It sounds as though your computer has the wrong time in the CMOS. The CMOS (Complementary Metal-Oxide Semiconductors) is the chip that holds the basic startup information for the BIOS, system and its peripherals while the system is turned on and off.

If you can get into the BIOS check the date and time settings and make sure they are correct.

It may also be a case of the CMOS Battery going out. When this happens your computer will tend to not keep the correct time. They are cheap and relatively easy to replace. Before buying a new battery you can try to take it out and let it sit for about 10 minutes or so to reset the CMOS and then go put the battery back in and go into the BIOS and reset the clock.

Hopefully taking the battery out or replacing it will get past your lock icon asking for the password. If not then you may have to find out the manufacturer of your computer's motherboard to see if there is a common password to get past the lockout. Since it's a laptop then it should be easier to find this code based on the manufacturer.

These links may help you with that:
How do I Reset an IBM ThinkPad BIOS Password?
CMOS Password locked on IBM Thinkpad

Yes, remove and replace the cmos battery...some can be unclipped and older ones can be unsoldered...

Is time to replace the battery. Is gone.

Replace the backup battery and run BIOS Setup Utility to reset the time and date. This will resolve the issue.

The Thinkpad POST error code you are getting are :-
163 - CMOS error, clock is not updating
175 - Bad EEPROM CRC
This is caused by either a faulty EEPROM chip or a flat CMOS battery.
Replacing the CMOS battery and go into the CMOS/BIOS configuration and set the Date and Time etc.
If the problem is still there then it is a motherboard problem and depending upon the age of the laptop it may not be worth repairing.

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!!

Sounds like you tried this, but it's worth a shot again. Remove the CMOS battery on the motherboard and let the laptop sit for an hour, then replace the battery with a new one.

If the only real issue is changing the time and date, you can do this in Windows and it will reset the BIOS clock, too, of course.

If the problem is that the time and date keep reseting, you either have a low CMOS battery or a short on the motherboard that is resetting it.

If all else fails, you might need to flash the BIOS from a floppy disk with the latest BIOS version for your machine to reset it and go from there.

PS: BIOS reset problems on laptops are sometimes due to power problems caused by battery packs going bad; check your battery pack, too, and see if it is working okay.

Good luck...