R30 thinkpad, rtc clock failure, need to replace battery, please advise the battery type and instructions to replace, thanks in advance.

Lenovo ThinkPad Edge E320?

I don't think you are referring to the Main battery......

However;
1) There is a slide button on each side of the Main battery.
Both are slid to the outside edges of the laptop, then the main battery is slid out. Out towards the outside of the laptop.

I believe you are referring to the CMOS battery.
Also known as the RTC battery. Real Time Clock battery.

From what I can see the ThinkPad Edge E330 is VERY similar to the ThinkPad Edge E320.

What you need is the HMM. Hardware Maintenance Manual,

http://www.manualowl.com/m/Lenovo/ThinkPad-Edge-E330/Manual/309892

Use the Right Arrow on the right side of the number 100, at the top; to go down through the pages.

Page 61 for Main Battery Removal/Replacement
(Starts on Page 60 - 1010 Battery Pack. Bottom of page)

Page 70 for RTC Battery Removal/Replacement
Bottom of the page - 1070 Backup Battery

As you can see you just remove the screws, (Philips. Use No.1 Philips screwdriver, or equivalent Jewelers screwdriver), for the Bottom Cover, and remove the Bottom Cover.

(It's a panel. It is not the Base Enclosure/Bottom Cover)

Then unplug the small white male plug connector, on the end of the RTC Battery's wires; from the motherboard.
Remove the RTC Battery, and replace.

This shows you in a video, but a different Lenovo ThinkPad Edge laptop.

Principle is still the same,

http://support.lenovo.com/en_US/downloads/detail.page?DocID=PD021754

KNOW THIS HOWEVER........
Your body carries Static electricity. When that Bottom Cover is removed, all of the Static shock sensitive hardware components are exposed.......

You need to make SURE your body is relieved of Static, BEFORE reaching to unplug that RTC battery, or remove it.

Better still is to wear an ESD wrist strap, and have it's alligator clip attached to a good ground source.
(Electro Static Discharge)

Average cost is around $3 to $6.
Here is but one example,

http://www.radioshack.com/product/index.jsp?productId=2103245

Example of RTC Battery,

http://www.ebay.com/itm/COMPATIBLE-Backup-RTC-CMOS-BIOS-BATTERY-CR2032-FOR-IBM-Thinkpad-02k6541-/251250253852?pt=Laptop_Batteries&hash=item3a7faea01c

Now I did NOT state that this was THE RTC Battery you need.
Just stating that is what it looks like.

Know this;
ALL of these batteries produce 3 Volts DC.
They use a CR2032 watch type battery, that is commonly used in a desktop computer.
All you need to make sure of, is the Male Plug Connector is correct.

Yep. That's it.........
If you HAVE to, you could cut the wires on the new RTC Battery, cut the wires on the old RTC Battery, and PROPERLY splice the old RTC battery's male plug connector to the new one.

Use heat shrink tubing, and solder the wires together.

Remove RTC Battery to reset a password?
Nope. Don't think so.

There should be a capacitor, or capacitors; that store a small residual charge of power -> INDEFINITELY, even after removing the RTC Battery. (CMOS battery)

CAN I be wrong? Yep. Depends on manufacturer, and year made.

Replace RTC Battery because it's no good?
Yes. Sure.

Looking at the Base Enclosure, (Bottom Cover), is part of what makes me think the E330 is very close to the E320,

http://www.pcworld.idg.com.au/review/notebooks/lenovo/thinkpad_edge_e320_129834m/397569/images?image=5

http://support.lenovo.com/en_AU/product-and-parts/detail.page?DocID=PD024121

For additional questions please post in a Comment.
Regards,
joecoolvette

If it is a coin size battery, yes it can pop out of the holder.
The battery maybe a lithium 3 volt battery - could be a CR2032 battery, check the battery when you remove it before you buy a new one.

Welcome to Fixya

The sstem has RTC battery. Please click this link then go to FRU removal. Then click RTC battery.

Thank you for using Fixya!

If you need further help, reach me via phone at https://www.6ya.com/expert/elixirjose_00375ea24bd8141b

Hi,
Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. BIOS password can be removed by temporarily disconnecting/ removing the RTC/ CMOS (Coin-cell) battery from the motherboard. Disconnect the coin-cell battery from the system board and it will reset the BIOS to its default setting and the password would be gone.
Please Refer to Page 29, 106 & 79 of the REPAIR MANUAL IBM T40 for Battery removal, keyboard removal and RTC battery removal instructions.
The Backup Battery (RTC, CMOS) is located under the keyboard. So you have to remove the keyboard to access the battery. The above Manual from IBM shows the exact method/ instructions and pictures for laptop dis-assembly for the purpose.
If you are comfortable with working inside such electronics, you can't do it yourself, or else you may seek help from local laptop service professional.

Hope it helps! Good Luck! Thanks for using Fixya!
CreativeTECH

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.

I received an IBM laptop with same issue a few months back. The error message due to the drained out CMOS RTC (coin-cell battery), which retains and other BIOS settings.
The system is OK and all you have to do is to get the CMOS/RTC battery replaced by the a professional.
Good Luck!
CreativeTECH

it's inside the laotop...u need to open it up....
it's little dyzzy....dont try if you are not sure of how to do....
take it to a tech shop....

You need to update the BIOS.

I have just replaced the Cmos on an IBM R30 model 2657 turn the laptop on its back and there are only 2 screws i had to undo which hold the Keyboard in place 2 arrows are also marked on the back to show which ones to take out once this was done the keyboard lifted easilt and i used a CR1225 as i didnt have the CR 1220 to hand and it worked fine

hi friend,

Probably a dead Motherboard battery. Need to enter the BIOS screens and reset values. Especially the time and date. Maybe the boot order and if using USB KBoard enable legusy USB devices. This will occur each time your friend shuts down and reboots until the battery is changed.
Issue
When you turn your Toshiba computer on, you see an error message like: **** Bad RTC battery ****
**** Bad Checksum (CMOS) ****
Check system, then press [F1] key The Real Time Clock (RTC) battery provides power for the internal clock/calendar and for maintaining system configuration settings.
This error can occur when a machine has been left turned-off for an extended period of time (around a month), and is the result of a depleted RTC battery. Other symptoms include not being able to execute Windows Update properly, errors/problems executing application software (like Norton Antivirus), and the appearance of the Windows XP "Desktop Clean Wizard".
Resolution This condition is easy to fix in 3 basic steps: Reset the BIOS defaults
Set the correct date and time in Windows.
Charge the RTC battery Please follow the detailed instructions in the next section.
Procedure Set BIOS defaults Press the [F1] key as instructed in the error message:
**** Bad RTC battery ****
**** Bad Checksum (CMOS) ****
Check system, then press [F1] key In the BIOS setup screen press the [Home] key to restore the default values, then press the [End] key to save and exit, then the [Y] key to confirm and restart the system. Set the correct date and time in Windows As Windows starts-up, you may see an error message about an "Invalid System Time". Go ahead and click "OK" to clear the error dialog. Open the Windows Control Panel and open the "Date and Time" control by double-clicking its icon. Set the correct date and time, then click OK to save. Charge the Real Time Clock (RTC) battery To charge the RTC battery, connect the AC adapter and turn the computer on (both the DC IN and Power LEDs must be green). Leave the machine on for approximately 24 hours to ensure a full charge in the RTC battery. Please note that the RTC battery does not charge while the PC is turned off, regardless of whether the AC adapter is connected or not. Other Information: If, on subsequent reboots, the "Bad RTC Battery" error persists, it's quite likely that you actually do have a bad RTC battery. If that's the case, you should contact a Toshiba Authorized Service Provider to have the system serviced. Windows XP Desktop Cleanup Wizard The first time you reboot Windows XP after resetting the system clock, Windows XP may try to run the "Desktop Cleanup Wizard". Simply Cancel the "Desktop Cleanup Wizard" at the first dialog. If you do manage to clean your shortcuts from the desktop and want to recover them, you will find them in a folder called "Unused Desktop Shortcuts". You can recover them as follows: Double-click to open the "Unused Desktop Shortcuts" folder
Click to expand the "Edit" menu, and click "Select All"
Drag the selected items back to your desktop
Close the "Unused Desktop Shortcuts" folder. You can delete this folder if it is empty.

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regards,
sivaranjini