CMOS Batteries

Sort by:
RTC CMOS Battery for Dell Alienware 17 R5 / P31E / P31E002

RTC CMOS Battery for Dell Alienware 17 R5 / P31E / P31E002

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 17 R5 / P31E / P31E002Dell Alienware 17 R5 / P31E...
RTC CMOS Battery for Dell Alienware 17 R3 / P43F / P43F001

RTC CMOS Battery for Dell Alienware 17 R3 / P43F / P43F001

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 17 R3 / P43F / P43F001Dell Alienware 17 R3 / P43F...
RTC CMOS Battery for Dell Alienware 17 R2 / P43F / P43F001

RTC CMOS Battery for Dell Alienware 17 R2 / P43F / P43F001

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 17 R2 / P43F / P43F001Dell Alienware 17 R2 / P43F...
RTC CMOS Battery for Dell Alienware 17 / P18E / P18E001

RTC CMOS Battery for Dell Alienware 17 / P18E / P18E001

¥44.05
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 17 / P18E / P18E001Dell Alienware 17 / P18E / P18E001...
RTC CMOS Battery for Dell Alienware 15 R4 / P69F / P69F002

RTC CMOS Battery for Dell Alienware 15 R4 / P69F / P69F002

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 15 R4 / P69F / P69F002Dell Alienware 15 R4 / P69F...
RTC CMOS Battery for Dell Alienware 15 R2 / P42F / P42F002

RTC CMOS Battery for Dell Alienware 15 R2 / P42F / P42F002

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 15 R2 / P42F / P42F002Dell Alienware 15 R2 / P42F...
RTC CMOS Battery for Dell Alienware 15 / P42F / P42F001

RTC CMOS Battery for Dell Alienware 15 / P42F / P42F001

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 15 / P42F / P42F001Dell Alienware 15 / P42F / P42F001...
RTC CMOS Battery for Dell Alienware 14 / P39G / P39G001

RTC CMOS Battery for Dell Alienware 14 / P39G / P39G001

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 14 / P39G / P39G001Dell Alienware 14 / P39G / P39G001...
RTC CMOS Battery for Dell Alienware 13 R3 / P81G / P81G001

RTC CMOS Battery for Dell Alienware 13 R3 / P81G / P81G001

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 13 R3 / P81G / P81G001Dell Alienware 13 R3 / P81G...
RTC CMOS Battery for Dell Alienware 13 R2 / P56G / P56G002

RTC CMOS Battery for Dell Alienware 13 R2 / P56G / P56G002

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 13 R2 / P56G / P56G002Dell Alienware 13 R2 / P56G...
RTC CMOS Battery for Dell Alienware 13 / P56G / P56G001

RTC CMOS Battery for Dell Alienware 13 / P56G / P56G001

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware 13 / P56G / P56G001Dell Alienware 13 / P56G / P56G001...
RTC CMOS Battery for ELAIO ELAIO18501E-BL AIO

RTC CMOS Battery for ELAIO ELAIO18501E-BL AIO

¥80.83
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your ELAIO ELAIO18501E-BL AIOELAIO ELAIO18501E-BL AIO 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.