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Introduction |
| If your laptop has a dead CMOS battery and the OEM no longer sells new CMOS batteries (and aftermarket ones are hard to find), it is possible to take the dead battery apart and replace the cell so your laptop holds the CMOS contents again. | | '''***''IMPORTANT: This procedure is only recommended for older notebooks which replacements aren’t commonDUE TO THE ASSOCIATED DANGER IF THINGS GO WRONG, or readily availableTHIS IS ONLY RECOMMENDED FOR OLDER NOTEBOOKS WHERE READY TO INSTALL REPLACEMENTS ARE UNCOMMON. If a pre-built replacement can be purchased, it'sthis is (generally) better, due to replace it as thethe fact there is little to no cost saving vs. rebuilding. It is similar. This approach isalso somewhat error-prone, and can create the same issue as a dead battery if the tape fails.'''''*** | | '''***''Guide notes:'''''*** | | * The cell does not need to be covered 100%. HoweverDue to the risk of an explosion, you MUST cover every visible area ofat least to the cell must be point it is "protected". '''***''Liquid electrical tape is used to do this since it can be removed cleanly if something goes wrong and provides a better seal without the risks introduced by using heatsink and a butane flame.'''''*** | * Laptop disassembly is not covered. '''***''Every laptop is different, so yours probably varies from the one this was pulled from. Check iFixit or the manufacturer to see how to remove the dead cell.'''''*** | * '''***''This guide ONLY applies to coin cell rebuilds. Do not use this guide for other batteries.'''''*** | * '''***''When adding tape to the cell, dobe very careful not to create a direct short.'''''*** To avoid this, place the tabs slightly higher than the factory and cut the tape sorter then you need, but still holding reliably. |
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