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Aporte original por: substevew ,


Update to my problem.  I gote two new batterys for my MBP and did a test!

re-installed OS X 6

Installed one of the new batterys.

The battery lasted over 3 hours

Alowed OS X 10.6.0 to update 10.6.8

Over the next 4 weeks I run the MBP on the battery 3 times a week never letting it drop below 20min (As the battery was less then a month old did not cycle it).

By the end of the 3rd week the battery was lasting less the 40min's

Re-plased the battery with the other new one.

It's now been over 3 months and the battery is still OK

This would suggest that there is a update between 10.6.0 and 10.6.8. that changes the  farmware in the battery that afects the way is charges or discharges or re-ports charge.

My suggestion is if you are updating to any update in the 10.6.n range then remove the battery while doing the update.