CMOS Batteries

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RTC CMOS Battery for Dell OptiPlex 7490 AIO / W26C / W26C003 / W26C004

RTC CMOS Battery for Dell OptiPlex 7490 AIO / W26C / W26C003 / W26C004

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7490 AIO / W26C / W26C003 / W26C004Dell OptiPlex 7490 AIO...
RTC CMOS Battery for Dell OptiPlex 7470 AIO / W19C / W19C001

RTC CMOS Battery for Dell OptiPlex 7470 AIO / W19C / W19C001

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7470 AIO / W19C / W19C001Dell OptiPlex 7470 AIO / W19C...
RTC CMOS Battery for Dell OptiPlex 7480 AIO / W26C / W26C001 / W26C002

RTC CMOS Battery for Dell OptiPlex 7480 AIO / W26C / W26C001 / W26C002

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7480 AIO / W26C / W26C001 / W26C002Dell OptiPlex 7480 AIO...
RTC CMOS Battery for Dell OptiPlex 7460 AIO / W19C / W19C001

RTC CMOS Battery for Dell OptiPlex 7460 AIO / W19C / W19C001

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7460 AIO / W19C / W19C001Dell OptiPlex 7460 AIO / W19C...
RTC CMOS Battery for Dell OptiPlex 7450 AIO / W11C / W11C002

RTC CMOS Battery for Dell OptiPlex 7450 AIO / W11C / W11C002

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7450 AIO / W11C / W11C002Dell OptiPlex 7450 AIO / W11C...
RTC CMOS Battery for Dell OptiPlex 7440 AIO / W11C / W11C001

RTC CMOS Battery for Dell OptiPlex 7440 AIO / W11C / W11C001

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7440 AIO / W11C / W11C001Dell OptiPlex 7440 AIO / W11C...
RTC CMOS Battery for Dell OptiPlex 7400 AIO / W26C / W26C005 / W26C006

RTC CMOS Battery for Dell OptiPlex 7400 AIO / W26C / W26C005 / W26C006

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7400 AIO / W26C / W26C005 / W26C006Dell OptiPlex 7400 AIO...
RTC CMOS Battery for Dell OptiPlex 7090 Tower Desktop / D28M / D28M005

RTC CMOS Battery for Dell OptiPlex 7090 Tower Desktop / D28M / D28M005

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7090 Tower Desktop / D28M / D28M005Dell OptiPlex 7090 Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 7090 Small Form Factor Desktop / D15S / D15S004

RTC CMOS Battery for Dell OptiPlex 7090 Small Form Factor Desktop / D15S / D15S004

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7090 Small Form Factor Desktop / D15S / D15S004Dell OptiPlex 7090...
RTC CMOS Battery for Dell OptiPlex 7090 Micro Form Factor Desktop / D14U / D14U004 / D14U005

RTC CMOS Battery for Dell OptiPlex 7090 Micro Form Factor Desktop / D14U / D14U004 / D14U005

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7090 Micro Form Factor Desktop / D14U / D14U004 / D14U005Dell...
RTC CMOS Battery for Dell OptiPlex 7080 Tower Desktop / D28M / D28M004

RTC CMOS Battery for Dell OptiPlex 7080 Tower Desktop / D28M / D28M004

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7080 Tower Desktop / D28M / D28M004Dell OptiPlex 7080 Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 7080 Small Form Factor Desktop / D15S / D15S001

RTC CMOS Battery for Dell OptiPlex 7080 Small Form Factor Desktop / D15S / D15S001

¥44.00
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 7080 Small Form Factor Desktop / D15S / D15S001Dell OptiPlex 7080...

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.