ThinkPad T440, T440s, T450, T450s - Backup Battery Replacement

[@gottahaveit3774]

Easy enough. My system wouldn't power on. I used this guide to reset my CMOS battery and it booted right up. Thanks for this info.

[@davidsibusisomabena1515]

May god bless you for making this DIY solutions available and showing how to go about fixing even for guys like us with zero IT capabilities. Please make more of them, you're a savior.

[@josuegloria9007]

Muchas gracias ❤ Desde México

[@Gendymohamad]

Hello, I didn't use my T440 laptop for 8 months. Now it displays that it not charging and powers of when I remove the AC adaptor. So, do I need to change the only external battery for T440? If so, do I have to open the whole laptop as demonstrated in the video?

[@LenovoSupport]

Hi Mohammad. Thanks for reaching out to us. Try doing power drain first. Remove all peripheral devices connected to the laptop including the charger and the external battery then press and hold the power button for 15 seconds. Once done, plugged in the charger and just let the battery out and turn on the laptop. If the laptop turns on with only the charger then the external battery is defected and needs replacement. Let us know how it goes. Auxen_Lenovo

[@allentchang]

Suppose the CMOS / RTC (Real Time Clock) backup battery of a thinkpad fails. Will the BIOS complain about RTC or checksum error if the thinkpad is either constantly connected to either the AC power supply or the thinkpad's non-depleted main battery? I would assume that as long as the RTC is still powered by the AC power supply or the main battery, the BIOS wouldn't complain. The reason I ask is that I left a thinkpad in storage for a few years. The CMOS battery seems to be still powering the RTC, but I'm not keen on opening many things to replace it in case it fails. If there's an alarm about the CMOS battery dead every time I turn the thinkpad on even though there are alternative sources of power to keep the RTC alive, then that would really suck.

[@charlesarizona]

Why not replace the battery? This nice video shows how easy it is.

[@mollenruziwa8485]

Extremely useful video❤

[@jaboukiful]

If both external and internal battery is bad, can the laptop still turn on using the AC adapter?

[@Rakha31925]

Maybe I don't know.

[@PlectraandStringsStudio2024]

Very useful thank you❤❤

[@abdelghani7229]

My ThinkPad l430 beeps 5 times then another 5 beeps and won't boot up, my question is, should I change the CMOS battery ?

[@LenovoSupport]

Hi Abdel! Thanks for reaching out. Kindly check these pages lnv.gy/2IODaeF, lnv.gy/2UCrSwY for reference regarding beep codes. Erica_Lenovo

[@MasMarone]

I have the same problem

[@abdelghani7229]

@@MasMarone there was a problem with the BIOS, had to take it to a professional.

[@MasMarone]

@@abdelghani7229 Thank you for your answer. I've already ordered the new battery for bios. Maybe I can do it myself.

[@harissaeed9709]

Hello.. ive lenovo w50 which isn't booting up.. no issue with the ram.. the led light on the power botton stays on when ac adapter is plugged in. Could it be the backup power cell that's faulty?

[@LenovoSupport]

Hi Haris. To clarify, even the Lenovo Splash screen is not coming on, it's just a plain black screen? Can we please press the capslock key a few times then check if the capslock light turns on and then off? We'd like to help. Cy_Lenovo

[@Frankl204]

What a legend! worked x

[@Fred70115]

The internal battery can go bad and need replacement. Wish the video added a bit more on how to do this. Still, good start.

[@taflukta]

kzbin.info/www/bejne/baPGm6Npj9SLiaM

[@unokeraphael1701]

When I power on my Lenovo ThinkPad T440s, The external battery does show on my PC. Only the internal battery working. What could be the issue from the external battery? I tried using a brand new Battery but it still doesn't show on the PC. I have resetted the bios and all that but no solution yet.

[@LenovoSupport]

Hi unokeraphael1701! Apologies for the trouble. Just to check, when did the problem start? Did you change any settings or install anything prior to that? Does the laptop still powering on while the charger is connected? If yes, does the laptop turn off automatically once you unplug the charger? Update us again. Thank you for reaching our support! -Chris_Lenovo

[@unokeraphael1701]

@LenovoSupport Yes my PC powers on with the internal battery working. My concern is the external battery not working on the PC. The external battery not working happened after the PC was disassembled by a technician. I don't know if the back up battery connector is not properly fixed or it's a software problem. The PC dies easily as it's only the Internal that is working currently 🥺

[@unokeraphael1701]

@LenovoSupport The laptop doesn't turn off when I unplug the charger. It no longer shows Battery 1 Battery 2. I don't know what could be the problem

[@LenovoSupport]

Hey unokeraphael1701! Just to check, have you tried contacting the technician who disassembled your Lenovo unit, and inquire about this matter? Did the technician replace a certain part on your Lenovo unit? Does the external battery work before the technician open or disassembled your Lenovo unit? -Chris_Lenovo

[@unokeraphael1701]

@@LenovoSupport Yes it's working before I gave it to the technician. The battery still works on another T440s PC

[@edd1862]

how about the thinkpad t430? i have one and i always receive the cmos error everytime i boot into windows

[@DrChatNuffs]

Absolutely perfect.....Tanx......

[@marfbeats]

Thank you so much

[@manishmeshram51]

I'm not able to update the bios on my l440 using conventional method of. Exp and Cd drive? Will removing cmos help?

[@LenovoSupport]

Hi there, @Manish Meshram! Thank you for reaching our support! Just to confirm, did you download the BIOS firmware update directly from the Lenovo Support website? If yes, did you get an error message when you run the BIOS firmware update? What exactly happened when you install the BIOS firmware update? We're looking forward to your reply. -Chris_Lenovo

[@cheikhseck2098]

You are just amazing . Thank you

[@tracylf5409]

How to disable internal battery if you cannot get a boot to BIOS? Trying the old, "pull battery/AC, push power button, plug AC & try to power-up" trick....Is it a "crack-open-case" situation?

[@LenovoSupport]

If you are unable to get into the BIOS you can remove the bottom cover and disconnect the internal batter cable from the system board as shown in the video. It has the same effect, we just include it in the video in case users were unable to enter the BIOS, as in your case.

[@mozozozo1]

In a T440 20B7SOREOG where is the WWAN 4G slot?Just over the Hard Drive as we see it in that view?Can I replace it with an M.2 (2242) SSD?In the boot menu after hitting F12 i have 2 options ,one for my hard drive i 'm using and another one PCI LAN.Where does this refer to?When i press F1 startup_then _boot i have 8 options ata hdd1 ata hdd2,what are these ones too,please?

[@_.Hamza007]

After disconnecting built-in battery from bios. Now its completely off, tried 15 second and 30s holding power button without charger and battery but still doesn't work with and without battery

[@LenovoSupport]

Hi @_.Hamza007, Kindly send us a private message on our social media channels for us to provide you with the troubleshooting steps. Addie_Lenovo

[@bishalchakraborty7255]

Any kind of CMOS battery support in the T450 thinkpad laptop?

[@LenovoSupport]

Hi Bishal! Apologies as we do not have one for the CMOS. You can find more videos here of the T450 here on this link lnv.gy/2YpuUq3. -Jerry_Lenovo

[@bishalchakraborty7255]

Actually Sir, when I'm press the power button my T450 thinkpad doesn't start and sometimes after lots of try maybe it's turn on...now still happening this problem so what should I do?

[@LenovoSupport]

You can try doing a power drain. Remove all peripheral devices connected to the computer then press and hold the power button for 15 seconds. Plug the machine back then turn it on. -Jomz_Lenovo

[@youssefelbrahmi6483]

may I ask if the internal battery of the t450 T440 and t440s are the same ? because i have a T450 model and i'm looking for buying an internal battery and i always find in the discrption of the battery thath they are for the T440 model

[@LenovoSupport]

We recommend searching for the correct battery here: pcsupport.lenovo.com/us/en/ Enter your Machine Type Model number, or your serial number to find the correct parts for your system.

[@LenovoSupport]

Go to: support.lenovo.com Type the product name, machine type, or serial number to find your system. Click the 'Drivers & Software' tab. You can find the drivers for your system there.

[@LenovoSupport]

You might want to contact Lenovo Support to help you resolve your issue. support.lenovo.com

[@TheSnoopdog14]

EVERY TIME when i turn on the PC , i got to adjust the date and time , otherwise pc wouldn't turn on . because when i start it , it starts with no DATE AND TIME after every time . DOE S REPLACING the battery like in your video , will solve this issue ?

[@LenovoSupport]

Hi TheSnoopdog14! Thanks for reaching out, and we hope you're doing well. When the issue started? Did you update any software or change any settings prior to this issue? Generally, there are multiple possible reasons why the time keeps resetting and one of the possible reasons is the CMOS battery. In addition, you can also try to update the BIOS and drivers. Here's how: support.lenovo.com/us/en/videos/vid500028. Then observe if the issue persists. We'd like to extend our help. Rai_Lenovo

[@LenovoSupport]

Hi there @TheSnoopdog14! If you still have the issue after updating drivers and BIOS, you might need to replace the CMOS battery. -Jomz_Lenovo

[@TheSnoopdog14]

@@LenovoSupport so , this morning happened again . if i need to replace cmos battery , that means the battery on the motherboard ? if it is that , then it is a battery wrapped in yellow tape . and if it is cr2032 ? do i just take the battery out of the wrap , and put the new one and wrap it ?

[@LenovoSupport]

Thanks for getting back to us. Kindly delete the message that includes the serial number to secure your personal information. Yes, you described it correctly. The part number of the CMOS battery is 02K7078. If you are in Israel, you may get the contact details of our Parts Sales distributor here lnv.gy/3t3Sgjw. You may reach out for assistance regarding the repair service to one of our service provider in your area. You may use this link lnv.gy/2V6LP2Q to find one near you. Let us know if you have other queries or concern. Fraineee_Lenovo

[@TheSnoopdog14]

@@LenovoSupport thank you for your reply. U didn't answer what I asked u regarding the battery and the yellow tape .

[@sad-9452]

my t430 is not turning on , will replacing cmos battery resolve my issue?

[@LenovoSupport]

Hi Sadaqat, thanks for writing in. We're sorry to know about your trouble. There are a lot of factors why a device is not turning on. May we know if there were any updates/changes prior to this issue? When you tried to turn it on, do you see any lights on it? Have you tried using a different charger? Did you encounter any error messages prior to this issue? We'd like to know more. Looking forward to your reply. Fraineee_Lenovo

[@sad-9452]

@@LenovoSupport Thanks for response , no there were no updated or changes , it was working fine but suddenly it turned off and then never turned on , i tried different charger but no luck , i have tried different solutions given online but nothing worked , also i would like to tell you that the battery was already deads so i was using laptop directly since long. I want to ask that is it reccomended to use without battery? Also since its not turning on then it means its internal battery is also dead now. where it is located ? and does it has anything to do with cmos?

[@LenovoSupport]

Thanks for writing us back, Sadaqat. Have you tried to update your BIOS? Meanwhile, kindly follow the steps below if you still haven't tried it. 1. Press Windows key + I to open Settings. 2. Choose Update & Security. 3. Select Recovery from the left pane. 4. Under the Advanced startup, click Restart now. 5. Choose Troubleshoot. 6. Select Advanced options. 7. Choose UEFI Firmware Settings and click Restart. 8. Reset all settings to default and reboot your PC. We'll wait for your update. Fraineee_Lenovo

[@cedrickngcungama8442]

Thank you

[@perdom024]

cual deberia comprar, para una lenovo edge Thinkpad 14?

[@hatembenayache]

Does this procedure reset bios password?

[@LenovoSupport]

Hi Hatem! Thanks for writing in to us. We cannot guarantee that it will reset the BIOS password on the computer. For more infomration about BIOS password, you can check on this link lnv.gy/3mQZkfv. -Jerry_Lenovo

[@Sarra.Ben.Radhia]

I removed the battery and I put it back but I can not change the date

[@LenovoSupport]

Hello Aymen, Thanks for reaching out. Please let us know if you have a password set in your BIOS? Because if this is the case this will set the time options as read only. You can try resetting the BIOS to its default settings and check if that will fix the issue. Jack_Lenovo

[@Sarra.Ben.Radhia]

@@LenovoSupport i think that a password set in bios how i do ???

[@smartshiva3777]

Where can I buy the CMOS battery for Lenovo B490?

[@LenovoSupport]

Hi Smart Shiva, thanks for reaching us out. May we know from what country are you planning to purchase the CMOS battery? We're here to help. Looking forward to your reply. Fraineee_Lenovo

[@smartshiva3777]

Thanks for the reply. I am from India.

[@LenovoSupport]

You can visit the nearest authorized service centers lnv.gy/2HR4a9U to check the availability or order the part. -Jerry_Lenovo

[@smartshiva3777]

Thank you.

[@dzazt]

Thanks !

[@TheEricsheng]

may I ask for price of internal 3 cell battery?

[@LenovoSupport]

Which machine do you have?

[@TheEricsheng]

Lenovo Service lenovo thinkpad t460

[@LenovoSupport]

You can find a new battery and price for that system here: shop.lenovo.com/us/en/accessories/batteries-power-adapters/

[@आरंभ-भ5ल]

Please share video of T430s lenova CMOS battery replacement

[@LenovoSupport]

Hi आरंभ! Thanks for reaching out. We don't have a CMOS battery replacement video here. Try checking the Hardware Maintenance Manual for the steps. Link here, lnv.gy/2NF8rzf. Mac_Lenovo

[@LenovoSupport]

Hi आरंभ.. In addition to what Mac have mentioned, this article lnv.gy/2Hmlep9 indicates that you will need to remove the battery & keyboard to access the CMOS battery on the T430s. Check out this keyboard removal guide lnv.gy/2HmleWb (3rd party video) and follow instructions on lnv.gy/2Hmlftd to remove the CMOS battery. Ray_Lenovo

[@ruthc124]

Thinkbook 14 G2 Bios battery is not detachable

[@daleelson8622]

You left out the part about actually swapping out the battery...

[@mn3566]

Hii , When I turn on the laptop I getting a msg as {"battery1 has failed due to normal wear. The battery can't be charged. Replace the battery."} Instead of this I won't have any issues it's normally working good but iam getting msg like this as above👆.. What can I do now please suggest me

[@LenovoSupport]

Hi! Thanks for reaching out. Could you send us a private message via our Lenovo Official Facebook Page or a direct message via our Lenovo Official Twitter Page and include this reference number 1245649 in your message and provide the serial number of your laptop for us to check your options? Here's how to find the serial number lnv.gy/3pBTIXz - We'd like to help. Mark_Lenovo Facebook: lnv.gy/3aXVle2 Twitter: lnv.gy/2KQDJWX

[@Sarra.Ben.Radhia]

mode read only

[@josephking6515]

I wish you would use terminology that countries other then the USA could properly understand. The CR 2032 is *not* a backup battery. It is a CMOS battery, frequently called the BIOS battery but backup battery it is NOT! It may provide trickle voltage for the CMOS to keep the BIOS settings when the mains power is disconnected or the laptop battery is flat/run down/exhausted/out of go juice but it does not even back those settings up.

[@intelinside7522]

lol baterai nya made in indonesia ,cintailah produk-produk indonesia

[@paspw8954]

Wkwk

[@mahaveersuman616]

Mere laptop ka password Lag Gaya Hai Kaise Kholu

[@LenovoSupport]

Hi Mahaveer! Thanks for reaching out. Could you share us more details about your password issue? Are you referring to your device password when logging in? What do you mean when you said your laptop's password has been reached by Kaise Kholu? Erica_Lenovo

[@chouaybechouaybe1572]

L450

[@mahaveersuman616]

Lanovo thinkpad L470 password restore

[@RootSuitMan]

wait this isn't google