13 weeks MBP 13" Battery 85% ??

Hello people, i recently bought a brand new mid 2010 mbpro 13"
im worried about my battery health
85% (4906/5770) it was 86% couple of days ago and 96% about a week ago
28 cycles
13 weeks
i have calibrated 2 times but nothing changed, should i send to repair?
thanks!
is my battery messed

Hello!
My MBP 13" battery also have the same problem. After the recent sudden shutdown, the technical support told me to calibrate my battery.
While it was charging with the adaptor, my Full Charge Capacity was 5002.
and now that i have charged fully + at least 2 Hours, it became:
Charge Information:
Charge remaining (mAh): 4484
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 4609
im also puzzled too~

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Model Information:
Manufacturer:          Sony
Device Name:          ASMB012
Pack Lot Code:          1
PCB Lot Code:          0
Firmware Version:          110
Hardware Revision:          500
Cell Revision:          303
Charge Information:
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Fully Charged:          Yes
Charging:          No
Full Charge Capacity (mAh):          4200
Health Information:
Cycle Count:          40
Condition:          Service Battery
Battery Installed:          Yes
Amperage (mA):          0
Voltage (mV):          12361

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Fancy meeting you here!
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Affected batteries will have one or more of the following symptoms:
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Have you done that?
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http://kb.parallels.com/en/111541
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8:12 PM 99% Wednesday
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System Power Settings:
AC Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 10
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Display Sleep Uses Dim: Yes
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Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 45
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
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Model Information:
Manufacturer: Sony
Device name: ASMB012
Pack Lot Code: 0003
PCB Lot Code: 0000
Firmware Version: 102a
Hardware Revision: 0400
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Health Information:
Cycle count: 353
Battery health: Fair
Battery Installed: Yes
Amperage (mA): 0
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Your battery is certainly on the way out, and 30% health is quite low. Even though your battery is not part of the recall, be aware that there are two 'replacement' programs for batteries, the recall, and a general acknowledgement that there are battery problems which is coupled to a battery warranty extension (to two years for Core Duo machines). You may have already read the page where that is explained.
Even though you have >300 cycles you are clearly far below the 80% health those 300 cycles should have held to. So, you need a new battery, and Apple might provide one for free. Call AppleCare (there are special prompts for battery problems) or visit an Apple Store. Be polite but firm. Worst-case scenario, you have to buy a new battery. But it's probable that will step up - their customer service is quite good.
Hope this helps...

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sometimes i used until 75% or 45% if i need to go study somewhere. then i connect the ac power when at home to use ac power. its normal right?

it shouldnt cause damage, the below 100% could be from a multitude off problems if the computer is in sleep and not shut-off it is probably proccecess that run regardless of you not using it. ie operating systems procceces that turn it on when you move your mouse. its nothing to be worried about. you cannot overcharge like our friend said before me aswell. most computers have a regulator in them if not in the powercord that keep the currant at a certain voltage. for example a car runs on around 12.5-7 volts depending on the model and is drained at 12.1 or lower you add a current to it at 12.6 and it will recharge but not overcharge. so dont worry about it.

13 weeks MBP 13" Battery 85% ??

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