IBM 40Y6799 Battery Cannot Charge and Discharge Factors & Solutions

Published on by Laptop Battery

When we say our IBM 40Y6799 battery dead, it means the 40Y6799 cannot charge or discharge. When we get problems on our IBM 40Y6799 laptop battery that it is not recognized by our ThinkPad T60 or ThinkPad R60 series notebooks or after some months using it cannot work, we have something to check and we can try to solve the problem first.

1)   Why IBM 40Y6799 Battery Cannot Charge?

  1. The 40Y6799 laptop battery is in zero voltage;
  2. Charger failure, no output current;
  3. External factors have led to the charging efficiency is too low (such as low or high temperature).

Solution for IBM 40Y6799 Battery Charge Problem:

  1. Check charger output voltage and current;
  2. Check the laptop battery charger output contacts is good or not;
  3. Charge the battery with 1.5 times the maximum voltage of the battery, 1.5C high current charging, active the IBM 40Y6799 battery. (Only when the battery cannot charge, use this method).

2)  Why IBM 40Y6799 Battery Cannot Discharge?

  1. The 40Y6799 laptop battery after the storage using and the life decay;
  2. Lacking charge or not be charged;
  3. Ambient temperature is too low;
  4. Discharge efficient less, such as the large current discharge cause voltage sharp drop to 0, then electricity cannot be released
  5. The 40Y6799 battery has been in over-discharge protection.

Solution for IBM 40Y6799 Battery Discharge Problem:

  1. The IBM 40Y6799 battery during storage should take a monthly charge and discharge;
  2. Charge the battery at 10% state;
  3. Use in a normal environment;
  4. Use proper adapter of the notebook;
  5. Place it in icebox for about 12 hours and cool place 3-5 days to unlock the protection.

Related reading: IBM 40Y6799 Battery – Caring the laptop Rechargeable Battery 


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Published on IBM Laptop Batteries

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