Battery Health

Question

Level 1

0 points

Battery Health

This is my first Mac, and is about a year in a half old, I have noticed severely decreased battery lifespan and am curious if anyone can give me some advice on if I should break down and buy a replacement. I have attempted to search around and find out what some of this means, but I haven't had much luck. Conflicting answers regarding the Charge Remaining.. That is such a low number, it has me worried. :\

Model Information:

Serial Number: 9G13203PWD3NB

Manufacturer: DP

Device Name: bq20z451

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 201

Hardware Revision: 2

Cell Revision: 164

Charge Information:

Charge Remaining (mAh): 26

Fully Charged: No

Charging: Yes

Full Charge Capacity (mAh): 5038

Health Information:

Cycle Count: 364

Condition: Normal

Battery Installed: Yes

Amperage (mA): 2812

Voltage (mV): 11953

MacBook Pro, Mac OS X (10.7.2)

Posted on Mar 17, 2013 12:17 PM

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Answer 1

mende1

Level 10

93,624 points

Mar 17, 2013 12:22 PM in response to mishmash87

"Charge Remaining" refers to the energy that your battery has got now. If the number is low, it indicates that your battery is low, so you have to connect the computer to a power source.

The battery condition appears as normal, so you shouldn't be worried. Anyway, download coconutBattery and tell me what appears in "Battery capacity" (the current capacity and the design capacity). If there's a big difference between them, you may consider the option to take the computer to an Apple Store or reseller to get your battery replaced

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Answer 2

Mar 17, 2013 12:23 PM in response to mishmash87

only buy a new battery if the current one no longer meets your needs (i.e. the charge time is not sufficient).

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Answer 3

OGELTHORPE

Level 9

57,329 points

Mar 17, 2013 12:39 PM in response to mishmash87

If your MBP is 18 months old, you have used your battery a lot. Based on your charge remaining, you have run your battery down to full discharge. That is not good and shortens the useful life of the battery. As general rule, I keep my MBP attached to the power adapter as much as possible and I will let the battery discharge about once per month to the 40 % level. Now this may not be possible for some people, but as soon as you get the battery level warning, terminate your session and plug the power adapter in and recharge the battery..

Here are a couple Apple support articles that may give you some insights for proper battery use.

http://www.apple.com/batteries/notebooks.html

http://support.apple.com/kb/ht1446

Ciao.

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