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  1. Recalibrating laptop batteries, Log the original calibration data: 步骤 1 中的图像 1,1
    • This battery is too far gone for recalibration.

    • Before recalibrating the battery, charge the battery to 100%. Take a note of the initial data.

  2. Recalibrating laptop batteries, Use your laptop: 步骤 2 中的图像 1,3 Recalibrating laptop batteries, Use your laptop: 步骤 2 中的图像 2,3 Recalibrating laptop batteries, Use your laptop: 步骤 2 中的图像 3,3
    • Any data from this step will be lost. Only plug the laptop in to get the machine started from a BIOS lockout.

    • Use your laptop while it is discharging. Do this until the computer shuts down.

  3. Recalibrating laptop batteries, Plug your laptop in: 步骤 3 中的图像 1,2 Recalibrating laptop batteries, Plug your laptop in: 步骤 3 中的图像 2,2
    • While it is safe to use your laptop, the calibration accuracy may be affected.

    • Every laptop has a different charge indicator. When your laptop is fully discharged, plug it in immediately. Fully charge the laptop.

  4. Recalibrating laptop batteries, Verify the new calibration data: 步骤 4 中的图像 1,1
    • This procedure may "kill" end of life batteries.

    • Once you are finished, check the BMS data. The reported data should be corrected.

  5. Recalibrating laptop batteries, (Windows 10) Battery health check: 步骤 5 中的图像 1,3 Recalibrating laptop batteries, (Windows 10) Battery health check: 步骤 5 中的图像 2,3 Recalibrating laptop batteries, (Windows 10) Battery health check: 步骤 5 中的图像 3,3
    • This may not work if your battery is older, even if it is an OEM pack.

    • Run Command Prompt as an administrator. Enter powercfg /batteryreport.

    • When the report is ready, you will receive a message stating where it is located. Check the data for consistency.

  6. Recalibrating laptop batteries, (HP UEFI) 15% lockout bypass: 步骤 6 中的图像 1,3 Recalibrating laptop batteries, (HP UEFI) 15% lockout bypass: 步骤 6 中的图像 2,3 Recalibrating laptop batteries, (HP UEFI) 15% lockout bypass: 步骤 6 中的图像 3,3
    • This will fully discharge the battery. HP diagnostics do not check the charge capacity.

    • Plug the laptop in and turn it on; unplug it once it is on. Press ESC and select System Diagnostics.

    • Open the Component tests submenu. Select Memory or Hard Drive.

    • Select Extensive test. Choose Loop until error.

    • When the laptop shuts off, immediately recharge the battery.

  7. Recalibrating laptop batteries, (HP Legacy BIOS) 15% lockout bypass: 步骤 7 中的图像 1,3 Recalibrating laptop batteries, (HP Legacy BIOS) 15% lockout bypass: 步骤 7 中的图像 2,3 Recalibrating laptop batteries, (HP Legacy BIOS) 15% lockout bypass: 步骤 7 中的图像 3,3
    • DO NOT apply these settings to your primary OS. They may damage the battery.

    • Boot the laptop into a live Linux Mint Cinnamon session. Open Settings and make the following changes:

    • Open Power Management. Change When the battery is critically low to Do nothing.

    • Use the laptop until it shuts down. Everything from this session will be lost.

  8. Recalibrating laptop batteries, (Lenovo 0190) Critical low battery bypass: 步骤 8 中的图像 1,3 Recalibrating laptop batteries, (Lenovo 0190) Critical low battery bypass: 步骤 8 中的图像 2,3 Recalibrating laptop batteries, (Lenovo 0190) Critical low battery bypass: 步骤 8 中的图像 3,3
    • Plug the power adapter into your laptop. Allow POST to finish before unplugging the laptop.

    • Disconnect the laptop once the laptop is booted. Finish discharging the battery.

  9. Recalibrating laptop batteries, (Optional) Label the battery: 步骤 9 中的图像 1,2 Recalibrating laptop batteries, (Optional) Label the battery: 步骤 9 中的图像 2,2
    • To better track the estimated health of the battery, labeling is recommended.

    • Note the date of the recalibration.

    • Note the original charge capacity (Designed capacity).

    • Note the current capacity of the battery (Full charge capacity).

终点

10等其他人完成本指南。

Nick

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3条评论

Did not help at all.

I have a Windows tablet, pretty old one - previously it was showing 39% battery wear (it actually was holding for about an hour, battery itself is a bir inflated).

A couple days ago it hard crashed and wear level was reseted to 0%. Now some weird stuff started: turning off when reaching 14% battery charge, screen dimming etc.

Tried this method, and as I said in the beginning - it did not help, still shows 0% wear.

Ослик Иа - 回复

Late response, but some laptops and Windows based tablets (notably HP) always show 0% wear in Batteryinfoview. You need to go into the UEFI diagnostics or use use HP Support Assistant and grab it from the advanced data on HP. If it’s Dell, UEFI SupportAssist (newer systems) or ePSA (legacy).

Nothing to worry about, but another quirk like the EOL capacity reporting response on some Dell batteries. Added a note in the quirks section about this.

Nick -

I’m curious, can we send command through the I2C interface from the laptop itself to the battery and do some calibration from there? is the built-in BMS has the capability to do that?

putraadriansyah08 - 回复

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