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Member Since: Sep 24, 2006
Location: Brooklyn, New York
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Mac Specs: 15" MacBook Pro, i7 2.66Ghz, 8GB RAM, 512GB SSD; iPad 3, iPhone 5

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Originally Posted by jeremiah3003 View Post
so i used coconut and it said my current capacity is 4335mAh out of the 5200.( i have black macbook)it is at 83% capacity and I have had it for 8 months. It also says there have been 209 load cycles. I have noticed that it doesn't last as long as it used to. I keep it on ac as much as possible. I was wondering if there was a post that goes over the basics...

like if the light goes green on powercord is it okay to leave it connected for 8-10hrs.
should you charge it fully and then drain it as low as possible before plugging it back in to ac power
is there anyway to get back some of those mAh or prevent further deterioration of battery capacity etc...

also on another note is it inefficient to have it running with a 512 and one of the original 256 chips or should I balance those out and run on 2 -512's.

any advice, threads, or other wise would be greatly appreciated.

Coconut is a nice app, although it just gets its information from the System profile which you can find when you select 'About this computer'.

As to your questions, I think its easy to get paranoid over battery maintenance and the fact is, no one ever treats them perfectly. However here are some basic tips that should be good for you.

- Regular deep discharges and recharges are not good for this type of battery. Try and recharge after a 50 - 70% drain if possible
- A full deep discharge and full recharge one every 2 or 3 months can help recalibrate the battery (i.e. show its true condition) and to keep it in good condition. To deep discharge the battery, wait until your Mac goes to sleep, then wait for the snooze light on the front to go out completely. When this happens, charge to full (i.e. wait for the green light).
- Try not to leave the battery fully discharged for any length of time, especially after a deep discharge
- Ideally (although I personally never do this) if you're going to use your MacBook via the mains for a very long time, remove your battery. Your battery is best stored around 40% charged (don't ask me why).

BTW, these things do not last forever. Expect, under normal use, that your battery will lose around 50% of its capacity within 2 years.

Your RAM configuration will not affect battery life, although having more RAM can help because your HDD is being used less.

In the land of the blind, the one-eyed man is stoned to death.
- Joan D. Vinge

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