CMOS Batteries

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RTC CMOS Battery for Acer Aspire 5920G

RTC CMOS Battery for Acer Aspire 5920G

$10.99
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RTC CMOS Battery for Lenovo ThinkPad T15g Gen 1 (Type 20UR, 20US)

RTC CMOS Battery for Lenovo ThinkPad T15g Gen 1 (Type 20UR, 20US)

$10.99
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RTC CMOS Battery for Lenovo ThinkPad P15v Gen 1 (Type 20TQ, 20TR)

RTC CMOS Battery for Lenovo ThinkPad P15v Gen 1 (Type 20TQ, 20TR)

$10.99
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat FeeHigh-quality and reliable CMOS battery for your Lenovo ThinkPad P15v Gen 1 (Type 20TQ, 20TR)Lenovo ThinkPad P15v Gen 1 (Type 20TQ,...
RTC CMOS Battery for Lenovo ThinkPad E14 Gen 3

RTC CMOS Battery for Lenovo ThinkPad E14 Gen 3

$10.99
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RTC CMOS Battery for Lenovo ThinkPad E14 Gen 4 (Type 21EB, 21EC)

RTC CMOS Battery for Lenovo ThinkPad E14 Gen 4 (Type 21EB, 21EC)

$10.99
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RTC CMOS Battery for HP Zbook Studio G2

RTC CMOS Battery for HP Zbook Studio G2

$10.99
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RTC CMOS Battery for HP Zbook Studio G1

RTC CMOS Battery for HP Zbook Studio G1

$10.99
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RTC CMOS Battery for HP ZBook 17 G3

RTC CMOS Battery for HP ZBook 17 G3

$10.99
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RTC CMOS Battery for HP Ultrabook Spectre XT Pro 13-B000

RTC CMOS Battery for HP Ultrabook Spectre XT Pro 13-B000

$10.99
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RTC CMOS Battery for HP ProBook 6475b

RTC CMOS Battery for HP ProBook 6475b

$10.99
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RTC CMOS Battery for HP ProBook 645 G2

RTC CMOS Battery for HP ProBook 645 G2

$10.99
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RTC CMOS Battery for HP Pavilion g7-2000

RTC CMOS Battery for HP Pavilion g7-2000

$10.99
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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.