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jacdem

macrumors member
Original poster
Apr 9, 2010
42
0
yesterday I just bought new battery and after using it it showed that It has 95% capacity. this morning it is showing me that It has only 82% of battery capacity. I called the sellers and He is telling me that is normal. I was thinking that he should change the battery.
I don't know much about macbook pro batteries, so any advice will be appreciated. I join a picture of the results showed by coconut battery.
 

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Calibrating a portable computer battery

To check battery status, use iStat Pro or coconutBattery or
 > About This Mac > More Info... > Hardware > Power > Charge Information:

Be aware that battery readings aren't 100% accurate, so you may find that your battery stops charging at 98% or your battery health fluctuates up and down over time (100%, 96%, 99%, etc.) This is completely normal. You don't have to worry about anything unless your battery health suddenly drops to under 80% with fewer than 300 cycles. In this case, assuming your battery is properly calibrated (so the readings are as accurate as possible), you may have a defective battery. If so, contact AppleCare to see if they will replace it.
 
thanks for your reply. The problem is that I didn't buy it from apple store and This is a new battery with only 2 cycles as you can see from the picture. So I am really wondering if the battery is good.
 
Let the battery run down, let it sleep for a few hours, then charge it back up again and see where it tops out. It could just be a read error, i've had them a couple of times, never as low as that though.
 
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