Need help with my battery.

KentuckyKid220

macrumors newbie
Original poster
Jan 4, 2012
16
0
Melbourne Australia
Hello. I have a few questions. I am thinking of giving up my friday movie night on my MBP to calibrate my battery. This is very heartbreaking. My battery used to last around 8-10 hours now its only lasting 4 hours.


Will calibrating my battery help?

My cycle count: 143
Battery status: Good
83%

I hear below 80% is when I need a battery replacement :mad: :( :( :(

So If I do calibrate will I get a better battery.



Q2: How much does a replacement cost? Thanks. Oh and the macbook pro 13" mid 2010 is 17 months old (According to coconutBattery)
 

thundersteele

macrumors 68030
Oct 19, 2011
2,984
7
Switzerland
Calibrating won't help you

If you have Applecare and it drops below 80% in the near future, you can get it replaced for free. Otherwise, it's your decision if you want to replace it or just keep it with the lower capacity.

I think the replacement is around $150.

Did you upgrade to Lion or something like that? Going from 100% to 80% should not cut your battery life in half - your power usage must have increased.
 

KentuckyKid220

macrumors newbie
Original poster
Jan 4, 2012
16
0
Melbourne Australia
Still on SL, I used to play sessions of WoW and Minecraft daily. And during those sessions I often recharged my mac.


Damm, well im going to calibrate and see how it goes.
 

Shredder-

macrumors regular
Jan 4, 2012
143
13
Oh gosh.....

Back when I never used bootcamp or played too many games on my mac. Back when I only used it for movies and music and browsing.


Bah.

My MBP 13" Late 2011 only gets 4-5 hours of battery and its brand new... I just browse / watch movies online
 

KentuckyKid220

macrumors newbie
Original poster
Jan 4, 2012
16
0
Melbourne Australia
I guess you missed my post. You don't need to calibrate your battery, and it won't improve your battery life from a charge. Read the link I posted.
I mean maybe my Readings are incorrect. I have never ever calibrated my battery and I tend to do stupid things. This is my 3rd time I installed SL.

Im guessing its a reading malfunction.
 

Blondie :)

macrumors 6502a
May 12, 2010
698
3
Prescott, AZ
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries.

This should answer most, if not all, of your battery questions:
Your link is not working. I have read the notebook battery PDF a few times, but I don't ever remember it saying that we don't need to calibrate your battery. Why don't you need to calibrate the new mac unibody notebooks once a month or so?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,420
759
Your link is not working. I have read the notebook battery PDF a few times, but I don't ever remember it saying that we don't need to calibrate your battery. Why don't you need to calibrate the new mac unibody notebooks once a month or so?
Both links are good. You may need to refresh and retry a few times for the Apple link, or clear your browser's cache, as Apple appears to be having problems with their site recently. The batteries in the newer unibody models come pre-calibrated and don't require regular calibration, according to Apple. This is stated in the CALIBRATION - NEWER UNIBODY MODELS section of the Battery FAQ.
 

Blondie :)

macrumors 6502a
May 12, 2010
698
3
Prescott, AZ
Both links are good. You may need to refresh and retry a few times for the Apple link, or clear your browser's cache, as Apple appears to be having problems with their site recently. The batteries in the newer unibody models come pre-calibrated and don't require regular calibration, according to Apple. This is stated in the CALIBRATION - NEWER UNIBODY MODELS section of the Battery FAQ.
You're right. Tried the link again and it worked fine. Also looked at that section of the FAQ. It's definitely good to know that, as up to this point I have still been calibrating every 6 weeks or so. I hope it doesn't do anything harmful to your system though, does it?
 

squeakr

macrumors 68000
Apr 22, 2010
1,603
1
Both links are good. You may need to refresh and retry a few times for the Apple link, or clear your browser's cache, as Apple appears to be having problems with their site recently.
Yeah this seems to have started about 2-3 weeks ago, and has only gotten worse. Usually a refresh of the page for me and it loads just fine (but seems to give the Apple page error (the one they post and not the browser generic) on the initial try.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,420
759
You're right. Tried the link again and it worked fine. Also looked at that section of the FAQ. It's definitely good to know that, as up to this point I have still been calibrating every 6 weeks or so. I hope it doesn't do anything harmful to your system though, does it?
No, you're fine. As stated in that section of the FAQ:
If you suspect your battery readings are inaccurate, calibration won't harm your battery and will make your readings more accurate.