CMOS Batteries

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RTC CMOS Battery for Dell OptiPlex 580 Mini-Tower Desktop / D02S / D04D / D08M / D02S001 / D04D001 / D08M001

RTC CMOS Battery for Dell OptiPlex 580 Mini-Tower Desktop / D02S / D04D / D08M / D02S001 / D04D001 / D08M001

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 580 Mini-Tower Desktop / D02S / D04D / D08M / D02S001...
RTC CMOS Battery for Dell OptiPlex 580 Small Form Factor Desktop / D02S / D04D / D08M / D02S001 / D04D001 / D08M001

RTC CMOS Battery for Dell OptiPlex 580 Small Form Factor Desktop / D02S / D04D / D08M / D02S001 / D04D001 / D08M001

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 580 Small Form Factor Desktop / D02S / D04D / D08M...
RTC CMOS Battery for Dell OptiPlex 390 Desktop / D07D / D07D001

RTC CMOS Battery for Dell OptiPlex 390 Desktop / D07D / D07D001

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 390 Desktop / D07D / D07D001Dell OptiPlex 390 Desktop / D07D...
RTC CMOS Battery for Dell OptiPlex 390 Mini-Tower Desktop / D12M / D12M001

RTC CMOS Battery for Dell OptiPlex 390 Mini-Tower Desktop / D12M / D12M001

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 390 Mini-Tower Desktop / D12M / D12M001Dell OptiPlex 390 Mini-Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 390 Small Form Factor Desktop / D04S / D04S001

RTC CMOS Battery for Dell OptiPlex 390 Small Form Factor Desktop / D04S / D04S001

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 390 Small Form Factor Desktop / D04S / D04S001Dell OptiPlex 390...
RTC CMOS Battery for Dell OptiPlex 380 Desktop / PC684HT / LB657BG

RTC CMOS Battery for Dell OptiPlex 380 Desktop / PC684HT / LB657BG

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 380 Desktop / PC684HT / LB657BGDell OptiPlex 380 Desktop / PC684HT...
RTC CMOS Battery for Dell OptiPlex 380 Mini-Tower Desktop / PC684HT / LB657BG

RTC CMOS Battery for Dell OptiPlex 380 Mini-Tower Desktop / PC684HT / LB657BG

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 380 Mini-Tower Desktop / PC684HT / LB657BGDell OptiPlex 380 Mini-Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 380 Small Form Factor Desktop / PC684HT / LB657BG

RTC CMOS Battery for Dell OptiPlex 380 Small Form Factor Desktop / PC684HT / LB657BG

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 380 Small Form Factor Desktop / PC684HT / LB657BGDell OptiPlex 380...
RTC CMOS Battery for Dell OptiPlex 360 Desktop / DCSM / DCNE

RTC CMOS Battery for Dell OptiPlex 360 Desktop / DCSM / DCNE

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 360 Desktop / DCSM / DCNEDell OptiPlex 360 Desktop / DCSM...
RTC CMOS Battery for Dell OptiPlex 320 Mini-Tower Desktop / DCSM / DCNE

RTC CMOS Battery for Dell OptiPlex 320 Mini-Tower Desktop / DCSM / DCNE

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 320 Mini-Tower Desktop / DCSM / DCNEDell OptiPlex 320 Mini-Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 320 Small Form Factor Desktop / DCSM / DCNE

RTC CMOS Battery for Dell OptiPlex 320 Small Form Factor Desktop / DCSM / DCNE

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 320 Small Form Factor Desktop / DCSM / DCNEDell OptiPlex 320...
RTC CMOS Battery for Dell OptiPlex 210L Mini-Tower Desktop / DCSM / DCNE

RTC CMOS Battery for Dell OptiPlex 210L Mini-Tower Desktop / DCSM / DCNE

¥44.04
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 210L Mini-Tower Desktop / DCSM / DCNEDell OptiPlex 210L Mini-Tower Desktop...

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.