CMOS Batteries

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Replacement RTC CMOS Battery for HP (Part Number) L02772-001, 830764-001

Replacement RTC CMOS Battery for HP (Part Number) L02772-001, 830764-001

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your HP (Part Number) L02772-001, 830764-001HP (Part Number) L02772-001, 830764-001 CMOS batteries are the highest-quality...
Replacement RTC CMOS Battery for Lenovo (Part Number) 0C55358, 04X0443, 23.25207.032

Replacement RTC CMOS Battery for Lenovo (Part Number) 0C55358, 04X0443, 23.25207.032

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo (Part Number) 0C55358, 04X0443, 23.25207.032Lenovo (Part Number) 0C55358, 04X0443, 23.25207.032 CMOS batteries are...
RTC CMOS Battery for HP ProBook 430 G6

RTC CMOS Battery for HP ProBook 430 G6

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your HP ProBook 430 G6HP ProBook 430 G6 CMOS batteries are the highest-quality lithium-ion batteries...
RTC CMOS Battery for ASUS Rampage VI Extreme Motherboard

RTC CMOS Battery for ASUS Rampage VI Extreme Motherboard

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your ASUS Rampage VI Extreme MotherboardASUS Rampage VI Extreme Motherboard CMOS batteries are the highest-quality...
RTC CMOS Battery for Lenovo ThinkPad X1 Carbon 7th Gen (Type 20QD, 20QE)

RTC CMOS Battery for Lenovo ThinkPad X1 Carbon 7th Gen (Type 20QD, 20QE)

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad X1 Carbon 7th Gen (Type 20QD, 20QE)Lenovo ThinkPad X1 Carbon 7th Gen...
RTC CMOS Battery for Lenovo ThinkPad T490

RTC CMOS Battery for Lenovo ThinkPad T490

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad T490Lenovo ThinkPad T490 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for HP ProBook 440 G7

RTC CMOS Battery for HP ProBook 440 G7

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your HP ProBook 440 G7HP ProBook 440 G7 CMOS batteries are the highest-quality lithium-ion batteries...
RTC CMOS Battery for HP Spectre x360 Convertible 13 Series

RTC CMOS Battery for HP Spectre x360 Convertible 13 Series

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your HP Spectre x360 Convertible 13 SeriesHP Spectre x360 Convertible 13 Series CMOS batteries are...
RTC CMOS Battery for Lenovo ThinkPad P52

RTC CMOS Battery for Lenovo ThinkPad P52

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad P52Lenovo ThinkPad P52 CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for Lenovo ThinkPad X1 Carbon 4th Gen

RTC CMOS Battery for Lenovo ThinkPad X1 Carbon 4th Gen

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad X1 Carbon 4th GenLenovo ThinkPad X1 Carbon 4th Gen CMOS batteries are...
RTC CMOS Battery for Acer Aspire 5600u

RTC CMOS Battery for Acer Aspire 5600u

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Acer Aspire 5600uAcer Aspire 5600u CMOS batteries are the highest-quality lithium-ion batteries on the...
RTC CMOS Battery for ASRock Phantom Gaming Z390 ITX Motherboard

RTC CMOS Battery for ASRock Phantom Gaming Z390 ITX Motherboard

£8.86
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your ASRock Phantom Gaming Z390 ITX MotherboardASRock Phantom Gaming Z390 ITX Motherboard CMOS batteries are...

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.