New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus • Advice and insight from world-class Apple enthusiasts • Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

intermittent Battery messages Good, Normal, Service, Replace


Post Reply New Thread Subscribe

 
Thread Tools
bartinl

 
Member Since: Dec 12, 2012
Posts: 8
bartinl is on a distinguished road

bartinl is offline
I am not sure if someone is know with this topic.

My battery has 390 load cycles, 2008 later Macbook 5,1 13"
I never had a noticeable decline in performance, until suddenly a month or 2 ago,
Service battery appeared and battery started to drop my PC off without a even a sleep warning.
Since, I have done several tests with battery expert, battery health and coconut battery.
My battery is according to that most of the time 98% compared to new, the 3 cells give equal voltage so it doesn't look like a broken cell.
The one day my battery (via those tools and via the mac system profiler) is good or normal, the other day it is replace now, then it is service now and it is definitely not consistant.
I have tried calibrations and so on but no avail.

It seems to me buying a new battery with the risk it isn't solved would be a waste of 129 euro's (and imitation batteries have inconsistant reviews;-)

does anyone recognise this issue?


Model Information:
Serial Number: 6N84701TH13C
Manufacturer: SMP
Device name: bq20z951
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 002a
Hardware Revision: 000a
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 4051
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 4051
Health Information:
Cycle count: 394
Condition: Normal
Battery Installed: Yes
Amperage (mA): 138
Voltage (mV): 12563

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: No
Current Power Source: Yes
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 10
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 2
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes

Hardware Configuration:

UPS Installed: No

AC Charger Information:

Connected: Yes
ID: 0x0100
Wattage (W): 60
Revision: 0x0000
Family: 0x00ba
Serial Number: 0x00d03d47
Charging: No
QUOTE Thanks
bartinl

 
Member Since: Dec 12, 2012
Posts: 8
bartinl is on a distinguished road

bartinl is offline
battery health

Voltage in all 3 cells 419
394 cycles
99% of charge capacity still effectively 4051 compared to new 4100

weird is that it says it is designed for 65535 cycles ;-)
power average is 1.73 watts
Power now is 1.51 watts
voltage is 12.56
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
Quote:
Originally Posted by bartinl View Post
I am not sure if someone is know with this topic.

My battery has 390 load cycles, 2008 later Macbook 5,1 13"

It seems to me buying a new battery with the risk it isn't solved would be a waste of 129 euro's (and imitation batteries have inconsistant reviews;-)

does anyone recognise this issue?
The battery in this model MacBook was is designed for 300 charge/discharge cycles. Since you have 390 cycles…battery performance/life will start to decline.

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
Quote:
Originally Posted by bartinl View Post
...weird is that it says it is designed for 65535 cycles ;-)
The computer (Coconut Battery) is probably receiving bad information from the battery…which wouldn't necessarily be surprising…since you are also getting the "Good, Normal, Service, Replace" messages as well.

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
dawson1112

 
dawson1112's Avatar
 
Member Since: Jul 29, 2012
Posts: 157
dawson1112 has a spectacular aura about

dawson1112 is offline
Quote:
Originally Posted by pigoo3 View Post
The battery in this model MacBook was is designed for 300 charge/discharge cycles. Since you have 390 cycles…battery performance/life will start to decline.

- Nick
exactly ........The battery cycle gods have been good to him lol.

I am actually surprised OSX didn't start howling at him to service battery soon 100 cycles ago lol.



I don't own a mac,,, but I did stay at a holiday inn last night.
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
@bartinl….before running out and buying a new battery…first try doing an "SMC Reset":

Intel-based Macs: Resetting the System Management Controller (SMC)

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
For anyone interested where this 300 & 1000 battery cycle info comes from:

- 300 cycle (user replaceable batteries)
- 1000 cycle (non-user replaceable batteries)

…here is the Apple document that explains it:

Mac notebooks: Determining battery cycle count

- Nick

p.s. There actually seems to be a few 500's as well.

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
Other good Apple battery info documents:

Apple - Lithium Ion Batteries
Apple - Batteries - Notebooks
Mac notebooks: Determining battery cycle count
Tips for maximizing battery charge
About battery storage life
Calibrating your computer's battery for best performance
Mac notebooks: Battery may not show a full charge in Mac OS X

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
dawson1112

 
dawson1112's Avatar
 
Member Since: Jul 29, 2012
Posts: 157
dawson1112 has a spectacular aura about

dawson1112 is offline
The best advice I can give someone to keep there batteries as long as possible in good condition is to never short cycle them . A lot of the time pple will charge the battery to 100 or 95 % then take the charger off and use it till it hits 40 or 50% . If your gonna use the unit on the battery then let it charge to 100% and use it till it gives you a warning to plug in the charger or at least let it go down to 15 or 20 %. And once a month apple recommends you completely discharge the battery by letting go to sleep from a low battery and allow it to sleep for 5 hrs or more before you plug it back in. Then let it charge to 100% and leave it plugged in for a few hrs after it reaches 100%.

Remember each time you plug in your charger and it starts charging, the battery considers this a cycle. regardless of weather or not it was 80% or 10% when it started charging.



I don't own a mac,,, but I did stay at a holiday inn last night.
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
Quote:
Originally Posted by dawson1112 View Post
The best advice I can give someone to keep there batteries as long as possible in good condition is to never short cycle them.
I can kind of see the logic in this…unfortunately Apple doesn't seem to have a specific recommendation (ok, good, or bad) regarding "short-cycling".

Quote:
Originally Posted by dawson1112 View Post
Remember each time you plug in your charger and it starts charging, the battery considers this a cycle. regardless of weather or not it was 80% or 10% when it started charging.
Not exactly. Yes…each time the charger is plugged in, it starts recharging the battery…but this does not mean a full battery cycle (according to this Apple document):

Mac notebooks: Determining battery cycle count

"About Battery Cycles: A charge cycle means using all of the battery’s power, but that doesn’t necessarily mean a single charge. For instance, you could use your notebook for an hour or more one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so it may take several days to complete a cycle."


Also…many Apple notebooks are programmed to avoid very short charge/discharge cycles. Meaning that if the battery has only been discharged 1-7% (93-99% of total charge remaining)...depends on computer model…then if the notebook is plugged in via the charger…it will not begin charging until the battery charge dips below this threshold:

Mac notebooks: Battery may not show a full charge in Mac OS X

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
bartinl

 
Member Since: Dec 12, 2012
Posts: 8
bartinl is on a distinguished road

bartinl is offline
hi pigoo3, many thanks for reply. ok.... So it is normal that the messages can shift forward and backward and that battery checks are actually not measuring the health (even if they are called " Battery health" ;-)

I expected the battery to first show loss in performance rather than completely unreliable from one day to another :-(
QUOTE Thanks
pigoo3

 
pigoo3's Avatar
 
Member Since: May 20, 2008
Location: U.S.
Posts: 25,690
pigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond reputepigoo3 has a reputation beyond repute
Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

pigoo3 is offline
Quote:
Originally Posted by bartinl View Post
hi pigoo3, many thanks for reply. ok.... So it is normal that the messages can shift forward and backward and that battery checks are actually not measuring the health (even if they are called " Battery health" ;-)

I expected the battery to first show loss in performance rather than completely unreliable from one day to another :-(
Did you try the "SMC" reset as suggested?

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
QUOTE Thanks
pendlewitch

 
Member Since: Sep 10, 2011
Location: Nelson,UK
Posts: 1,737
pendlewitch is a glorious beacon of lightpendlewitch is a glorious beacon of lightpendlewitch is a glorious beacon of lightpendlewitch is a glorious beacon of lightpendlewitch is a glorious beacon of lightpendlewitch is a glorious beacon of light
Mac Specs: iMac 27" Mid 2010, 3.2GHz Intel Core i3,4GB 1333 MHz DDR3, ATI Radeon HD5670 512MB, Mavericks 10.9.1

pendlewitch is offline
Quote:
Originally Posted by dawson1112 View Post
The best advice I can give someone to keep there batteries as long as possible in good condition is to never short cycle them . A lot of the time pple will charge the battery to 100 or 95 % then take the charger off and use it till it hits 40 or 50% . If your gonna use the unit on the battery then let it charge to 100% and use it till it gives you a warning to plug in the charger or at least let it go down to 15 or 20 %. And once a month apple recommends you completely discharge the battery by letting go to sleep from a low battery and allow it to sleep for 5 hrs or more before you plug it back in. Then let it charge to 100% and leave it plugged in for a few hrs after it reaches 100%.

Remember each time you plug in your charger and it starts charging, the battery considers this a cycle. regardless of weather or not it was 80% or 10% when it started charging.
Hello,
Sorry I came to this thread late. There are some very common misunderstandings about recharging batteries. It is generally accepted within the battery industry that Lithium Ion (and/or Polymer) batteries benefit from shorter charging periods and do not need to be fully charged.

The crude rule of thumb is that a charge/discharge cycle is the sum of all those partial charges from depths of discharge which add up to the notional 100% full charge..so a charge from 90% is only 10% and one from 60 % is 40% and so on.

The shorter the Depth of Discharge (DoD) the longer the battery will last because it is less stressful and exhibits a lightness of use rather than maxxing out the cells out and whacking them with a hefty charge. Partial discharge on Li-ion is no problem as there is no memory and the battery does not need periodic full discharge cycles to prolong life, other than to calibrate the fuel gauge on a smart battery(e.g. MBP) occasionally.

So the interesting thing is that the number of discharge cycles achievable when charging frequently from, for example, a 10 % DoD is approximately 10 times that of charging from 100% DoD.

This just isn't practical for most people but if you could charge from 50% DoD on a regular basis you could expect 3 times (1200 to 1500) the number of discharge/charge cycles from your battery as opposed to charging from 100% DoD (300 to 500).

iMac 27-inch Mid 2010, WD My Book 1TB Firewire,WD My Passport Air 500GB, Magic Mouse,Magic Trackpad,
iPhone 5C, iPod Nano 4GB 3rd Gen,ATV2, Samsung LE40 Series 6, Denon AVR1910, Kef HTS 1001.2’s and Kube-1 Sub
Denon DCD510AE, Panasonic DMP-BD60,Sky+HD,Logitech Harmony One Advanced. MOTM October 2012.
QUOTE Thanks
bartinl

 
Member Since: Dec 12, 2012
Posts: 8
bartinl is on a distinguished road

bartinl is offline
Hi Nick, i will now, many thanks for pointing out, I'll do that and give the results back first ;-)
QUOTE Thanks
bartinl

 
Member Since: Dec 12, 2012
Posts: 8
bartinl is on a distinguished road

bartinl is offline
Pendlewitch, superd info, very appreciated. Any chance your work related in this field?
QUOTE Thanks

Post Reply New Thread Subscribe


« Best way to preserve battery life? | MacBook Pro 13 or 15 - Xcode? »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
battery calculating - normal... bobbyz Apple Notebooks 2 10-16-2010 09:09 AM
Replace Battery hughvane Apple Desktops 1 11-29-2008 09:09 PM
Good external battery back-up for a mini prostuff1 iPod Hardware and Accessories 3 06-03-2005 10:18 PM
G4 Battery forza Switcher Hangout 1 06-17-2004 04:44 AM
Apple, Analysts on new music service schweb Apple Rumors and Reports 9 04-30-2003 01:14 PM

All times are GMT -4. The time now is 04:37 AM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?