CMOS Batteries

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RTC CMOS Battery for Lenovo ThinkPad W520

RTC CMOS Battery for Lenovo ThinkPad W520

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad W520Lenovo ThinkPad W520 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad T520

RTC CMOS Battery for Lenovo ThinkPad T520

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad T520Lenovo ThinkPad T520 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad T430u

RTC CMOS Battery for Lenovo ThinkPad T430u

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad T430uLenovo ThinkPad T430u CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad T15g Gen 2 (Type 20YS, 20YT)

RTC CMOS Battery for Lenovo ThinkPad T15g Gen 2 (Type 20YS, 20YT)

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad T15g Gen 2 (Type 20YS, 20YT)Lenovo ThinkPad T15g Gen 2 (Type 20YS,...
RTC CMOS Battery for Lenovo ThinkPad SL510

RTC CMOS Battery for Lenovo ThinkPad SL510

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad SL510Lenovo ThinkPad SL510 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad P17 Gen 2 (Type 20YU, 20YV)

RTC CMOS Battery for Lenovo ThinkPad P17 Gen 2 (Type 20YU, 20YV)

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad P17 Gen 2 (Type 20YU, 20YV)Lenovo ThinkPad P17 Gen 2 (Type 20YU,...
RTC CMOS Battery for Lenovo ThinkPad P17 Gen 1 (Type 20SN, 20SQ)

RTC CMOS Battery for Lenovo ThinkPad P17 Gen 1 (Type 20SN, 20SQ)

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad P17 Gen 1 (Type 20SN, 20SQ)Lenovo ThinkPad P17 Gen 1 (Type 20SN,...
RTC CMOS Battery for Lenovo ThinkPad L490 (Type 20Q5, 20Q6)

RTC CMOS Battery for Lenovo ThinkPad L490 (Type 20Q5, 20Q6)

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad L490 (Type 20Q5, 20Q6)Lenovo ThinkPad L490 (Type 20Q5, 20Q6) CMOS batteries are...
RTC CMOS Battery for Lenovo ThinkPad Edge E570

RTC CMOS Battery for Lenovo ThinkPad Edge E570

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad Edge E570Lenovo ThinkPad Edge E570 CMOS batteries are the highest-quality lithium-ion batteries...
RTC CMOS Battery for Lenovo ThinkPad Edge E555

RTC CMOS Battery for Lenovo ThinkPad Edge E555

$10.99
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RTC CMOS Battery for Lenovo ThinkPad Edge E540

RTC CMOS Battery for Lenovo ThinkPad Edge E540

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad Edge E540Lenovo ThinkPad Edge E540 CMOS batteries are the highest-quality lithium-ion batteries...
RTC CMOS Battery for Lenovo ThinkPad Edge E465

RTC CMOS Battery for Lenovo ThinkPad Edge E465

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad Edge E465Lenovo ThinkPad Edge E465 CMOS batteries are the highest-quality lithium-ion batteries...

Only the Best CMOS Battery

If the computer starts displaying the wrong date and time at every boot, this is one of the important signs that it is time to change the battery on the motherboard. If that is not carried out in time, then the BIOS simply will not boot, and the PC will not be able to start the OS.


What is a CMOS battery?

For stable operation of the built-in timer and the CMOS chip, which stores all the BIOS configuration, a battery is needed. It supplies power around the clock, even if the system unit is disconnected from the mains. It is located directly on the motherboard, in the most conspicuous place in the round slot.

RTC CMOS battery discharge symptoms

The average working time of a CMOS battery for laptop is five years. But the battery can run out earlier. You can notice this process by the following signs: the time lags behind the set by a couple of minutes - this is the first sign of a malfunction; failure to turn on the computer, the system starts only after turning on F1 - the second and most serious sign of a discharge. If the CMOS battery for motherboard is not replaced in time, then not only the set date and time are reset, but also the BIOS settings, which is especially noticeable for those users who set up the system for themselves. These settings include: download parameters; acceleration of system startup; setting up a video card and coolers; configuring interfaces. The output of a system message is the last sign that the tablet is out of order. Such messages can be: wrong time and date; error in setting or reading CMOS; error of control memory CMOS

How to change computer BIOS battery?

CMOS batteries can be changed by yourself, it is not a complicated process. The main thing is to get the right battery, the one that will fit your laptop or computer. On the site https://rometechcases.com/ suitable computer models are registered for each battery, it will be difficult to make a mistake. If you find it difficult to make the right decision, our support team will be happy to provide you with the assistance you need.