CMOS Batteries

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RTC CMOS Battery for Dell Alienware M17x R4 / P11E / P11E002

RTC CMOS Battery for Dell Alienware M17x R4 / P11E / P11E002

£4.70
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M17x R4 / P11E / P11E002Dell Alienware M17x R4 / P11E...
RTC CMOS Battery for Dell Alienware M17x R3 / P11E / P11E001

RTC CMOS Battery for Dell Alienware M17x R3 / P11E / P11E001

£4.70
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M17x R3 / P11E / P11E001Dell Alienware M17x R3 / P11E...
RTC CMOS Battery for Dell Alienware M17x / P01E / P01E001

RTC CMOS Battery for Dell Alienware M17x / P01E / P01E001

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M17x / P01E / P01E001Dell Alienware M17x / P01E / P01E001...
RTC CMOS Battery for Dell Alienware m17 R2 / P41E / P41E001

RTC CMOS Battery for Dell Alienware m17 R2 / P41E / P41E001

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware m17 R2 / P41E / P41E001Dell Alienware m17 R2 / P41E...
RTC CMOS Battery for Dell Alienware M15x / P08G / P08G001

RTC CMOS Battery for Dell Alienware M15x / P08G / P08G001

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M15x / P08G / P08G001Dell Alienware M15x / P08G / P08G001...
RTC CMOS Battery for Dell Alienware m15 R2 / P87F / P87F001

RTC CMOS Battery for Dell Alienware m15 R2 / P87F / P87F001

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware m15 R2 / P87F / P87F001Dell Alienware m15 R2 / P87F...
RTC CMOS Battery for Dell Alienware M15 / P79F / P79F001

RTC CMOS Battery for Dell Alienware M15 / P79F / P79F001

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M15 / P79F / P79F001Dell Alienware M15 / P79F / P79F001...
RTC CMOS Battery for Dell Alienware M14x / P18G / P18G001

RTC CMOS Battery for Dell Alienware M14x / P18G / P18G001

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M14x / P18G / P18G001Dell Alienware M14x / P18G / P18G001...
RTC CMOS Battery for Dell Alienware M11x R3 / P06T / P06T003

RTC CMOS Battery for Dell Alienware M11x R3 / P06T / P06T003

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M11x R3 / P06T / P06T003Dell Alienware M11x R3 / P06T...
RTC CMOS Battery for Dell Alienware M11x R2 / P06T / P06T001 / P06T002

RTC CMOS Battery for Dell Alienware M11x R2 / P06T / P06T001 / P06T002

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M11x R2 / P06T / P06T001 / P06T002Dell Alienware M11x R2...
RTC CMOS Battery for Dell Alienware M11x / P06T / P06T001 / P06T002

RTC CMOS Battery for Dell Alienware M11x / P06T / P06T001 / P06T002

£8.63
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware M11x / P06T / P06T001 / P06T002Dell Alienware M11x / P06T...
RTC CMOS Battery for Dell Alienware Aurora Ryzen Edition R14 / D30M / D30M003

RTC CMOS Battery for Dell Alienware Aurora Ryzen Edition R14 / D30M / D30M003

£4.70
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell Alienware Aurora Ryzen Edition R14 / D30M / D30M003Dell Alienware Aurora Ryzen...

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.