View Full Version : New battery: What's the best way to charge it?

19th June 2009, 04:56 PM
So I bit the bullet and bought a shiny new battery for my MBP. As this is the 3rd battery I've had I am determined to make it last. What is the best way to treat a brand new battery? The people in the shop said to discharge completely the charge in the battery (it showed about an hour when they first put it in) and then charge it fully.

On the apple website it says to plug in the new machine and charge fully. Then to calibrate the battery.

Which approach is best? And why does iStat pro show this new battery already down to 99%?????

As my previous 2 batteries both expired before their time, I am wondering if it is my usage pattern that is the problem.

Any advice?

19th June 2009, 06:11 PM
Just follow these instructions:
Apple Portables: Calibrating your computer's battery for best performance (http://support.apple.com/kb/HT1490)

I would charge it up fully, then discharge, then wait, then recharge.

19th June 2009, 07:57 PM
Thanks, that was my plan! Hopefully I won't wreck this one!

19th June 2009, 08:32 PM
Never run the battery down to below 10%. I used to do with with my MB battery every now and then, and it killed the health.
Now I connect to power when I am around the 12-15% charge remaining mark.
So far I have 100% battery health and 171 cycles.
I also try to use my laptop on battery 1-2 times per week.