03-12-2008, 01:31 PM

I bought the MBP in July 2007. I keep it on the charger all the time. I have noticed that the "battery health" is 63%. I have conditioned the battery several times by taking it off charge and letting it run down. In these situations, I also let it sit like this for a couple of hours before hooking the charger back up.

Is everything I have described considered normal? How long does it take, on the average, before having to replace the battery?

03-12-2008, 02:50 PM

Originally Posted by jrichard012

I bought the MBP in July 2007. I keep it on the charger all the time. I have noticed that the "battery health" is 63%. I have conditioned the battery several times by taking it off charge and letting it run down. In these situations, I also let it sit like this for a couple of hours before hooking the charger back up.

Is everything I have described considered normal? How long does it take, on the average, before having to replace the battery?

It depends on how frequently you completely discharge it. In normal use (let's say a full charge/discharge cycle at least 3 times per week), you'll probably get about 18 months (in my experience).

I've found that they tend to last longer when they're kept charged, or within 75% of their capacity.

Again, just my personal experience... YMMV.

03-12-2008, 02:53 PM

All of my Apple notebooks have kept their batteries for an average of 3 years each before I had to replace them.

03-12-2008, 03:39 PM

Seems pretty difficult to pin down, from what I've seen on these boards.

Everyone tells a different story.

Let's hope yours is a long one.

03-12-2008, 03:45 PM

Originally Posted by Weird Fish

Seems pretty difficult to pin down, from what I've seen on these boards.

Everyone tells a different story.

Let's hope yours is a long one.

Well, batteries are consumables. Much like the oil in your car, you'll see longer life depending on how you use your machine. There is no scientific way to tell you how long your battery should last.

03-12-2008, 04:11 PM

It seems like there should be a "Battery Thread Disclaimer" sticky.

There are three on the front page right now.

03-13-2008, 05:09 PM

The big problem is, a lot of people OVERTHINK how to properly condition their laptop.

Apple design's their laptops to be used as a mobile device. That said, the best way to keep your battery working is to use it like a mobile device. ie, don't always have it plugged in, don't always let it drain down to zero, don''t always use it unplugged.

For example, the average notebook user will have it plugged in sometimes and unplugged others.. Using your laptop from full battery power to say 60%, then putting it back on a charger is a GOOD way to use your laptop; this is how it was designed and how a majority of people use notebooks/laptops.

Perhaps once a month or even two, it may make sense to "calibrate" your battery.. This would mean allow it to drain completely and recharging it.

03-13-2008, 05:31 PM

By the way, is there a way to get a new battery after for example 1 1/2 year through AppleCare?

03-13-2008, 10:14 PM

this is a funny question to always see.

my answer: How long does a person live?

answer to that, it varies based on how they lived it

just use and abuse it, itll die anyways.