CMOS Batteries

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RTC CMOS Battery for Dell OptiPlex 5040 Small Form Factor Desktop / D11S / D11S001

RTC CMOS Battery for Dell OptiPlex 5040 Small Form Factor Desktop / D11S / D11S001

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 5040 Small Form Factor Desktop / D11S / D11S001Dell OptiPlex 5040...
RTC CMOS Battery for Dell OptiPlex 5000 Mini-Tower Desktop / D32M / D32M001

RTC CMOS Battery for Dell OptiPlex 5000 Mini-Tower Desktop / D32M / D32M001

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 5000 Mini-Tower Desktop / D32M / D32M001Dell OptiPlex 5000 Mini-Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 5000 Small Form Factor / D17S / D17S002

RTC CMOS Battery for Dell OptiPlex 5000 Small Form Factor / D17S / D17S002

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 5000 Small Form Factor / D17S / D17S002Dell OptiPlex 5000 Small...
RTC CMOS Battery for Dell OptiPlex 5000 Micro Form Factor Desktop / D15U / D15U002

RTC CMOS Battery for Dell OptiPlex 5000 Micro Form Factor Desktop / D15U / D15U002

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 5000 Micro Form Factor Desktop / D15U / D15U002Dell OptiPlex 5000...
RTC CMOS Battery for Dell OptiPlex 3280 AIO / W21B / W21B001

RTC CMOS Battery for Dell OptiPlex 3280 AIO / W21B / W21B001

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3280 AIO / W21B / W21B001Dell OptiPlex 3280 AIO / W21B...
RTC CMOS Battery for Dell OptiPlex 3240 AIO / W14B / W14B001

RTC CMOS Battery for Dell OptiPlex 3240 AIO / W14B / W14B001

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3240 AIO / W14B / W14B001Dell OptiPlex 3240 AIO / W14B...
RTC CMOS Battery for Dell OptiPlex 3090 Mini-Tower Desktop / D29M / D29M001

RTC CMOS Battery for Dell OptiPlex 3090 Mini-Tower Desktop / D29M / D29M001

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3090 Mini-Tower Desktop / D29M / D29M001Dell OptiPlex 3090 Mini-Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 3090 Small Form Factor Desktop / D15S / D15S001

RTC CMOS Battery for Dell OptiPlex 3090 Small Form Factor Desktop / D15S / D15S001

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3090 Small Form Factor Desktop / D15S / D15S001Dell OptiPlex 3090...
RTC CMOS Battery for Dell OptiPlex 3080 Mini-Tower Desktop / D29M / D29M002

RTC CMOS Battery for Dell OptiPlex 3080 Mini-Tower Desktop / D29M / D29M002

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3080 Mini-Tower Desktop / D29M / D29M002Dell OptiPlex 3080 Mini-Tower Desktop...
RTC CMOS Battery for Dell OptiPlex 3080 Small Form Factor Desktop / D15S / D15S002

RTC CMOS Battery for Dell OptiPlex 3080 Small Form Factor Desktop / D15S / D15S002

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3080 Small Form Factor Desktop / D15S / D15S002Dell OptiPlex 3080...
RTC CMOS Battery for Dell OptiPlex 3080 Micro Form Factor Desktop / D14U / D14U002

RTC CMOS Battery for Dell OptiPlex 3080 Micro Form Factor Desktop / D14U / D14U002

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3080 Micro Form Factor Desktop / D14U / D14U002Dell OptiPlex 3080...
RTC CMOS Battery for Dell OptiPlex 3070 Mini-Tower Desktop / D10U / D10U003

RTC CMOS Battery for Dell OptiPlex 3070 Mini-Tower Desktop / D10U / D10U003

¥44.06
Limited Time International Shipping Promo ̶$̶1̶3̶.̶9̶9̶ - $5 Flat Fee High-quality and reliable CMOS battery for your Dell OptiPlex 3070 Mini-Tower Desktop / D10U / D10U003Dell OptiPlex 3070 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.