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Introduction |
A dead or defunct CMOS battery can prevent the laptop from properly turning on. The CMOS battery powers the BIOS/UEFI chip in your laptop to keep track of system settings while your laptop is off. CMOS batteries deteriorate naturally overtime due to a limited number of charge cycles. Use this step-by-step replacement guide to remove the dead CMOS battery from your laptop. | | Swollen batteries are fire hazards and need to be handled with caution. Follow these safety guidelines when removing swollen or corroded batteries from your laptop. [[What to do with a swollen battery|What to do with a swollen battery - iFixit|new_window=true]] | | The replacement of the CMOS battery involves the removal of the bottom panel of the laptop, which is necessary to expose the laptop's internal components. For this replacement guide,a T5 Torx screwdriver is required to remove the Torx screws from the bottom panel, along with a Jimmy tool to detach the bottom panel from the laptop. A Philips #000 screwdriver is required to remove the screws from the battery pack. Use this step-by-step replacement guide to remove the dead CMOS battery from your laptop. | | Warning: Swollen batteries are fire hazards and need to be handled with caution. Follow these safety guidelines when removing swollen or corroded batteries from your laptop. [[What to do with a swollen battery|What to do with a swollen battery - iFixit|new_window=true]]
Make sure that the laptop is powered off before CMOS battery removal or tampering with any of the electrical components. |
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