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*Read guide note* How to rebuild a laptop CMOS battery

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  1. *Read guide note* How to rebuild a laptop CMOS battery, Determine what battery you need: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Determine what battery you need: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Most laptops use a CR2032 or 2025 cell. The CR2016 cell is uncommon.

    • Take the battery apart and check out what cell you need. This may be difficult depending on the wrap used.

  2. *Read guide note* How to rebuild a laptop CMOS battery, Disassemble the CMOS battery: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Disassemble the CMOS battery: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Disassemble the CMOS battery: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • If you break the leads, a new battery will need to be purchased.

    • After purchasing a battery, disassemble the CMOS battery. Use caution not to heavily bend the tabs. Too much damage may make them unusable.

    • Break the tabs off of the old battery. Dispose of based on your local laws.

  3. *Read guide note* How to rebuild a laptop CMOS battery, Verify polarity and tape the leads onto the new cell: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Verify polarity and tape the leads onto the new cell: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Verify polarity and tape the leads onto the new cell: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • ONLY USE ENOUGH TAPE FOR A FIRM HOLD. Using too much may short out the cell! In addition to using as little tape as possible, the cell must be tested before installation with a multimeter!

    • After the polarity has been matched, tape the positive lead to the new cell. To remove the risk of a failed rebuild, start on the + side and cut the tape to fit comfortably.

  4. *Read guide note* How to rebuild a laptop CMOS battery, Apply tape to the negative terminal: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • To place tape on the negative tab safely, try and keep the tape you cut as close as possible to the example image.

    • OFFSET the tape and terminal placement from the positive tab as much as possible.

    • After confirming the tape is not causing a short, add tape to the negative tab and tape down the negative terminal onto the new battery.

  5. *Read guide note* How to rebuild a laptop CMOS battery, Apply liquid electrical tape: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Apply liquid electrical tape: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 *Read guide note* How to rebuild a laptop CMOS battery, Apply liquid electrical tape: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Perfect coverage is not required. Focus on covering the major parts of the battery.

    • After verifying both leads are securely held onto the new cell, apply liquid electrical tape to the battery. 2-3 medium thickness coats are recommended.

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After building the replacement cell, install it in the notebook. Verify the battery works by setting the BIOS, powering it off and then removing the battery/AC adapter. If the CMOS memory is retained, your battery works.

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