MBP 17 inch battery life

[Technologist]

This is an old thread but I just picked up a 2009 17" Macbook Pro 5.2. 2.8Ghz

My battery holds more then 13,000mAH The Machine Draws 12 watts from my AC as measured by my Kill-A-Watt meter. That includes the Power supply losses.

The gauge says it will run for 10 hours on the lowest display brightness and 8.5 hours on medium. I have a Samsung 256 GB SSD drive in it.

The only complaint is the freaking razor sharp top edge that cuts your wrists. I put 5 layers of tape to keep it from trashing my wrists. I'm willing to bet a recall will be made to correct the razor blade edge. If not I might be willing to start a class action lawsuit to get Apple to fix the problem. Other then that it's an awesome setup.



Battery Information:

Model Information:
Serial Number: 9G93700NH****
Manufacturer: DP
Device name: bq20z951
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0042
Hardware Revision: 0001
Cell Revision: 0122
Charge Information:
Charge remaining (mAh): 12872
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 13187
Health Information:
Cycle count: 0
Condition: Normal
Battery Installed: Yes
Amperage (mA): -1204
Voltage (mV): 8264

 

[p8ntballguy]

Im having a similar issue with my 13 inch macbook. Any opinions, tried calibrating multiple times, might be time for a visit to the apple store.

Im only getting about 4 hrs from my battery with just safari open. By the way I have no idea how Ive put 69 cycles though this thing in 2 months. This is a replacement machine, my first had a hard drive failure with in a month of purchase, maybe the machine already had power cycles on it somehow. I didn't check it when I received it so there is no way of knowing.

Model Information:
Serial Number: 9G93309N18VPA
Manufacturer: DP
Device name: bq20z451
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0003
Hardware Revision: 0002
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 2912
Fully charged: No
Charging: Yes
Full charge capacity (mAh): 4750
Health Information:
Cycle count: 69
Condition: Normal
Battery Installed: Yes
Amperage (mA): 2608
Voltage (mV): 12188

 

[Minimoose 360]

How the heck is it even possible that he has 17000 mah????? Seems fake to me, unless they put a different battery in.

There were some "issues" (not really) when the Unibody 17" came out earlier this year. Some select users were getting batteries with a capacity of 17,000-18,000...I remember it clearly.

Unfortunately I was not one of them. :[

 

[Technologist]

Im having a similar issue with my 13 inch macbook. Any opinions, tried calibrating multiple times, might be time for a visit to the apple store.

Im only getting about 4 hrs from my battery with just safari open. By the way I have no idea how Ive put 69 cycles though this thing in 2 months. This is a replacement machine, my first had a hard drive failure with in a month of purchase, maybe the machine already had power cycles on it somehow. I didn't check it when I received it so there is no way of knowing.

Model Information:
Serial Number: 9G93309N18VPA
Manufacturer: DP
Device name: bq20z451
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0003
Hardware Revision: 0002
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 2912
Fully charged: No
Charging: Yes
Full charge capacity (mAh): 4750
Health Information:
Cycle count: 69
Condition: Normal
Battery Installed: Yes
Amperage (mA): 2608
Voltage (mV): 12188

4 hours is normal as your battery only has a little over half the capacity compared to mine. My 15" Macbook only ran for about 3 hours as it's energy load at idle was about 24 watts. My new 17" draws 12 watts at idle and has a much bigger battery.

As for your "cycle count" it's stored in the battery not the computer. If the battery is switched the count will go to 0 again.

 

[p8ntballguy]

4 hours is normal as your battery only has a little over half the capacity compared to mine. My 15" Macbook only ran for about 3 hours as it's energy load at idle was about 24 watts. My new 17" draws 12 watts at idle and has a much bigger battery.

As for your "cycle count" it's stored in the battery not the co immedately mputer. If the battery is switched the count will go to 0 again.

Well, when i first got my macbook pro it was getting about 6 hr, now four. Went to the apple store tonight, head genius said that battery health at 85% after two months was abnormal and swapped out the battery.

Agreed about the cycle count though, right back down to zero.

 

[Technologist]

Well, when i first got my macbook pro it was getting about 6 hr, now four. Went to the apple store tonight, head genius said that battery health at 85% after two months was abnormal and swapped out the battery.

Agreed about the cycle count though, right back down to zero.

Besides a battery loosing capacity part of the reduced battery life is when you add apps. You add a bunch of processes that increase CPU usage causing a decrease in battery life compared to a fresh OS install.

 

[p8ntballguy]

Besides a battery loosing capacity part of the reduced battery life is when you add apps. You add a bunch of processes that increase CPU usage causing a decrease in battery life compared to a fresh OS install.

Agreed, but nothing was taking up much cpu, had checked the activity monitor multiple times, and even disallowed flash to run. Genius checked activity monitor and console logs.....battery was definitely fubar. Battery at full charge now, estimated 6:56 hr left on full charge with half brightness and wifi on, was only getting 4 hr before with the same background app setup.