CMOS Batteries

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RTC CMOS Battery for Dell Inspiron 3800

RTC CMOS Battery for Dell Inspiron 3800

¥88.18
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Inspiron 3800Dell Inspiron 3800 CMOS batteries are the highest-quality lithium-ion batteries on...
RTC CMOS Battery for Dell Inspiron 2000

RTC CMOS Battery for Dell Inspiron 2000

¥88.18
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Inspiron 2000Dell Inspiron 2000 CMOS batteries are the highest-quality lithium-ion batteries on...
RTC CMOS Battery for Dell Alienware x51 R2 Andromeda

RTC CMOS Battery for Dell Alienware x51 R2 Andromeda

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware x51 R2 AndromedaDell Alienware x51 R2 Andromeda CMOS batteries are the...
RTC CMOS Battery for Dell Alienware X51 KM92T

RTC CMOS Battery for Dell Alienware X51 KM92T

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware X51 KM92TDell Alienware X51 KM92T CMOS batteries are the highest-quality lithium-ion...
RTC CMOS Battery for Dell Alienware X51 8PG26

RTC CMOS Battery for Dell Alienware X51 8PG26

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware X51 8PG26Dell Alienware X51 8PG26 CMOS batteries are the highest-quality lithium-ion...
RTC CMOS Battery for Dell Alienware X51 6G6JW

RTC CMOS Battery for Dell Alienware X51 6G6JW

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware X51 6G6JWDell Alienware X51 6G6JW CMOS batteries are the highest-quality lithium-ion...
RTC CMOS Battery for Dell Alienware Steam Machine ASM100-980

RTC CMOS Battery for Dell Alienware Steam Machine ASM100-980

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware Steam Machine ASM100-980Dell Alienware Steam Machine ASM100-980 CMOS batteries are the...
RTC CMOS Battery for Dell Alienware Steam Machine ASM100-6980BLK

RTC CMOS Battery for Dell Alienware Steam Machine ASM100-6980BLK

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware Steam Machine ASM100-6980BLKDell Alienware Steam Machine ASM100-6980BLK CMOS batteries are the...
RTC CMOS Battery for Dell Alienware Steam Machine ASM100-4980BLK

RTC CMOS Battery for Dell Alienware Steam Machine ASM100-4980BLK

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware Steam Machine ASM100-4980BLKDell Alienware Steam Machine ASM100-4980BLK CMOS batteries are the...
RTC CMOS Battery for Dell Alienware Steam Machine ASM100-2980BLK

RTC CMOS Battery for Dell Alienware Steam Machine ASM100-2980BLK

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware Steam Machine ASM100-2980BLKDell Alienware Steam Machine ASM100-2980BLK CMOS batteries are the...
RTC CMOS Battery for Dell Alienware Steam Machine ASM100 Series

RTC CMOS Battery for Dell Alienware Steam Machine ASM100 Series

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware Steam Machine ASM100 SeriesDell Alienware Steam Machine ASM100 Series CMOS batteries...
RTC CMOS Battery for Fujitsu LifeBook T4220

RTC CMOS Battery for Fujitsu LifeBook T4220

¥88.18
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Fujitsu LifeBook T4220Fujitsu LifeBook T4220 CMOS batteries are the highest-quality lithium-ion batteries on...

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.