CMOS Batteries

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RTC CMOS Battery for Lenovo ThinkPad A21

RTC CMOS Battery for Lenovo ThinkPad A21

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad A21Lenovo ThinkPad A21 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad A20

RTC CMOS Battery for Lenovo ThinkPad A20

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad A20Lenovo ThinkPad A20 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad Edge E130

RTC CMOS Battery for Lenovo ThinkPad Edge E130

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad Edge E130Lenovo ThinkPad Edge E130 CMOS batteries are the highest-quality lithium-ion batteries...
RTC CMOS Battery for Lenovo ThinkPad A285

RTC CMOS Battery for Lenovo ThinkPad A285

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad A285Lenovo ThinkPad A285 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo 14W

RTC CMOS Battery for Lenovo 14W

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo 14WLenovo 14W CMOS batteries are the highest-quality lithium-ion batteries on the market. High...
RTC CMOS Battery for Lenovo IdeaPad S340

RTC CMOS Battery for Lenovo IdeaPad S340

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo IdeaPad S340Lenovo IdeaPad S340 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo IdeaPad S130-11IGM

RTC CMOS Battery for Lenovo IdeaPad S130-11IGM

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo IdeaPad S130-11IGMLenovo IdeaPad S130-11IGM CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad Z60

RTC CMOS Battery for Lenovo ThinkPad Z60

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad Z60Lenovo ThinkPad Z60 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo IdeaPad S12

RTC CMOS Battery for Lenovo IdeaPad S12

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo IdeaPad S12Lenovo IdeaPad S12 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo IdeaPad 1-14IGL05

RTC CMOS Battery for Lenovo IdeaPad 1-14IGL05

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo IdeaPad 1-14IGL05Lenovo IdeaPad 1-14IGL05 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo Legion Y540

RTC CMOS Battery for Lenovo Legion Y540

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo Legion Y540Lenovo Legion Y540 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo Legion Y720

RTC CMOS Battery for Lenovo Legion Y720

$9.99 $10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo Legion Y720Lenovo Legion Y720 CMOS batteries are the highest-quality lithium-ion batteries on the...

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.