Battery Capacity And Charging

My MBP's battery has an original battery capacity of 6300mAh.
When fully charged its capacity is at just under 6800mAh.
I guess this would be considered overcharging; could this cause problems of any kind?

My replacement battery started with just under 6800 mAh, and over time drifted downward (which is normal) then stabilized (at around 91% health ±5%, where it's remained since about cycle 30). While it's above 6300 mAh, iStat and CoconutBattery will report health as 100%.
As Kappy stated, the 6300 mAh value (rounded up from 6296 mAh, actually) is a nominal value, calculated from the wattage and voltage specifications of the battery. Individual batteries will vary, with many initially exceeding that calculated value.
Bottom line, what you're seeing is normal and nothing to worry about.

Similar Messages

MBP 17" Battery Capacity and Run Times : Survey

I've had 2 MBP 17's so far, and I'd like to get a general idea from everyone about their battery capacity and run times they are experiencing.
My first MBP17 had a Full Charge Capacity of ~5900mAh before calibration and PMU reset, and 6800mAh after. This translated to about 3:40 of run time under light load.
My current MBP17 had a Full Charge Capacity of ~5899mAh before calibration and PMU reset, and 6942mAh after (currently). This translates to about 3:48 of runtime....still trying to get some more real-world run time numbers under different loads.
This proves to me that it is quite critical to calibrate your battery and reset your PMU at least once to ensure that your battery is reporting it's correct capacity. I'd be interested to know what everyone else's batteries are reporting.

I've had 2 MBP 17's so far, and I'd like to get a
general idea from everyone about their battery
capacity and run times they are experiencing.
My first MBP17 had a Full Charge Capacity of ~5900mAh
before calibration and PMU reset, and 6800mAh after.
This translated to about 3:40 of run time under light
load.
My current MBP17 had a Full Charge Capacity of
~5899mAh before calibration and PMU reset, and
6942mAh after (currently). This translates to about
3:48 of runtime....still trying to get some more
real-world run time numbers under different loads.
This proves to me that it is quite critical to
calibrate your battery and reset your PMU at least
once to ensure that your battery is reporting it's
correct capacity. I'd be interested to know what
everyone else's batteries are reporting.
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 6864
Remaining Capacity (mAh): 6862
Amperage (mA): -469
Voltage (mV): 12436
Cycle Count: 2
William

2008 early macbook pro battery normal and charging but stays at 0% Won't charge.Model Information:   Serial Number:     ˇ   Manufacturer:     SMP   Device Name:     ASMB012   Pack Lot Code:     4   PCB Lot Code:     0   Firmware Version:     0dc0   Hardwa

2008 early macbook pro battery normal and charging but stays at 0% Won't charge.
I have reset the SMC and PRAM
The charge light is orange on the magsafe charge cord.
Do I need new battery or is it a hardware issue?
Model Information:
Serial Number:          ˇ
Manufacturer:          SMP
Device Name:          ASMB012
Pack Lot Code:          4
PCB Lot Code:          0
Firmware Version:          0dc0
Hardware Revision:          0
Cell Revision:          0
Charge Information:
Charge Remaining (mAh):          0
Fully Charged:          No
Charging:          Yes
Full Charge Capacity (mAh):          4008
Health Information:
Cycle Count:          125
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          0
Voltage (mV):          8459
Message was edited by: mcj2112

Reset the SMC > http://support.apple.com/kb/HT3964
It's clear that the battery has got enough capacity to work correctly, so something happens with the MagSafe port or its charger. If you have another charger, try it, and if not, take the MacBook and the charger to an Apple Store or reseller. It's better to do this as we don't know if the problem is in the charger or in the MacBook Pro

Do you guys carry Kensington Mini Battery Pack and Charger for iPhone and iPod

do you guys carry Kensington Mini Battery Pack and Charger for iPhones

This might be what you are looking for > http://store.apple.com/us/search?find=kensington+battery

Wii battery pack and charging stations

What do you guys/gals think is the best battery pack and charging station for the Wii remotes?
**If you like my answer then click the little Star under my username.
**If my response answered your question then click the Solved button. Thanks

I see:
Nyko - Charge Station Charging Dock and Rechargeable Battery Pack Set for Nintendo Wii
Currently at 4.3 out of 5 stars, so that's a good vote of confidence. I like the price at $27.99.
I am a Bestbuy employee who volunteers on these boards on my own time. I am not paid for posting here, and you should understand that my opinions are exactly that - opinions. I do not represent Bestbuy in any way.
: Open Mailbox

Battery Calibration and Charge Capacity?

I am currently using a PB G4 15" (high res DL SD) and I've had it for about a month. I just read about calibrating the battery and went ahead and did it. Have I done any damage to the battery or shortened it's effectiveness by waiting a month to calibrate rather than when it was first out of the box?
Also, i also just read about checking the battery charge capacity using the system profiler. My charge capacity prior to calibration was 2731 and after calibration it's 2930. However, it sounds like it should be in the 4400's based on the posts I've read. What do these numbers mean and do I have a faulty battery since it's so low?
Thanks for your help.

Hi Kevin --
Yeah, I'm not loving those numbers you posted either. I'd try performing the calibration procedure once or twice more to make sure that that battery capacity number doesn't change.
The other thing I would do if I were you is download Coconutbattery: http://www.versiontracker.com/dyn/moreinfo/macosx/27425
It's a free app available at versiontracker and it will tell you your battery's original capacity as well as it's current capacity.
I agree with you that a capacity of 2930 mAh after only a month of use and 16 cycles suggests that your battery is defective and should be replaced at no cost to you under the terms of the warranty.
For a frame of reference, after 10 months of use and 166 load cycles, my battery's original capacity of 4400 mAh is now 4228 mAh. No way yours should be in the 2930 mAh range.
When you call AppleCare to arrange for a replacement, if in fact that's what you end up needing to do, the agent you speak with, in addition to making sure that you've properly calibrated your battery a few times (as mentioned earlier) may also ask that you reset your PB's Power Management Unit (PMU). While I'm skeptical that a PMU reset will alter the outcome, you can find instructions on how to reset the PMU here (just in case you need to): http://docs.info.apple.com/article.html?artnum=14449
Good luck and please post back how everything turns out.
-- JDee
PS. You probably know this, but the calibration procedure has been changed slightly for your DL hi-res version of the PB. Here it is below, just to make sure:
PowerBook G4 (15-inch Double-Layer SD)
The battery calibration for the PowerBook G4 (15-inch Double-Layer SD) has been updated because of a new battery released with this computer. With these computers, follow these steps to calibrate your battery:
Plug in the power adapter and fully charge your PowerBook's battery until the light ring on the power adapter plug changes to green and the onscreen meter in the menu bar indicates that the battery is fully charged.
Allow the battery to rest in the fully charged state for at least two hours. You may use your computer during this time as long as the adapter is plugged in.
Disconnect the power adapter with the computer still on and start running the computer off battery power. You may use your computer during this time. When your battery gets low, you will see the low battery warning dialog on the screen.
Continue to keep your computer on until it goes to sleep. Save all your work and close all applications when the battery gets very low, before the computer goes to sleep.
Turn off the computer or allow it to sleep for five hours or more.
Connect the power adapter and leave it connected until the battery is fully charged again.
Tip: When the battery reaches "empty", the computer is forced into sleep mode. The battery actually keeps back a reserve beyond "empty", to maintain the computer in sleep for a period of time. Once the battery is truly exhausted, the computer is forced to shut down. At this point, with the safe sleep function introduced in the PowerBook G4 (15-inch Double-Layer SD) computers, the computer's memory contents have been saved to the hard drive. When power is restored, the computer returns itself to its pre-sleep state using the safe sleep image on the hard drive.
Message was edited by: JDee

HP Pavilion battery healthy and charged but laptop is not running on battery

A serious and odd problem has developed with my Pavilion (HP 15-N096EA PC)
I removed the battery when the machine was switched off and pressed the start button as this procedure was suggested on a site for clearing malware issues.
Since then, my laptop has refused to run on battery. Behaves as if there was no battery in it. The Pavilion is relatively new, the battery is in perfect condition, charges to 100% and keeps the machine running for up to 6-8 (!) hours. Not kidding.
Even now, the mains connection charges the battery, the little icon says so in the system tray. It is now 100% charged.
But when I unplug the mains adaptor the whole thing dies immediately.
I applied electric contact cleaning liquid to the connection ends of the battery, even measured the voltage in the battery with the tipped ends of a volt meter. All reading perfect values, yet the computer has stopped working from battery.
An hour ago this computer worked completely well on battery, but since the current "draining" exercise absolutely nothing. Tried all sorts of options: Taking battery in and out while on mains, nothing doing. If I am correct, battery calibration can only happen with the computer running on battery and this computer refuses to run on any battery.
What has happened here please? ANY HINT,ADVICE, SUGGESTION from professionals, non-professionals most desired and appreciated. Thanks.

Hi @Squinancy
Welcome to the HP Support Forums!
From your description it sounds like you were try to do a hard reset of your notebook to start with, but it is possible it was not done properly. Read through this, and try it again.
HP Notebook PCs - Use Hard Reset to Resolve Hardware and Software Issues
If after that the computer is still not booting up on battery, check through this one next.
Battery does not power the notebook or hold a charge
Let me know how it works for you, and if you have more trouble please post any other details you can.
Malygris1
I work on behalf of HP
Please click Accept as Solution if you feel my post solved your issue, it will help others find the solution.
Click Kudos Thumbs Up on the right to say “Thanks” for helping!

Battery, photos, and "charge complete."

My pod isn't a year old (I guess it is fifth generation). This weekend I loaded some photos on it. Now, all of a sudden it is not holding a charge for an hour. I was not having any battery issues prior to this. Moreover, I no longer get a "charge complete" message at the top of my display. Many thanks for anyone who can offer advice.
jeffndc
Dell Windows XP

Maybe the iPod is not charging all the way. Maybe let it charge for a day or two and see what happens.

BATTERY INDICATOR AND CHARGING QUERY

Hi,
Can you please help me regarding my question on when will i know when my Xperia Z1 is already fully charged.
Does the lightning bolt indicator needed to disappear to identify if it is already fully charged?
also i'm having a lot of time charging my phone. i just bought it less than a week from now.
Thanks.

If you don't use any feature disable it. Here some tips...
If you have enable WCDMA or LTE mode you can switch to GSM only because the signal is better and there is a limited coverage for 3G, 4G, H+ networks (depending on your area) and your phone use more power to search that kind of networks, If you don't use mobile data often you can switch from WCDMA to GSM only. (A little compromise between internet speed and battery life)
I disable WIFI, Bluetooth, Location services, set Keep WIFI on during sleep to "never" , Scanning always available off, stamina always on. I also try to keep off background services like auto sync. I don't like wasting battery power with automatic synchronisations I'll manually sync accounts when i need it.
If you need to know where are any option you can ask here..

Start up requires PMU reset if battery dies and charger is attached.

I use my PowerBook sometimes without the charger attached in class or just around the house until the computer gets to the point of putting itself to sleep because the battery has no more charge. I attach the charger and it has the amber charging glow but I cannot restart the computer unless I reset the PMU which fixes the problem right away. Is this a problem, should I be concerned with resetting the PMU so often? Is there anyway to fix such a problem, does it have something to do with the battery's age, over 350 cycles? Its more of a nuisance than anything, but if there is a greater problem that will rear its head soon, I would like to know about it, such as a logic board issue. If anyone could give some insight, it would be greatly appreciated.
Thank You
Nick

We are having exactly the exact same problems with our G4, 2-yr old, Power Book. It won't start and the USB ports don't work, But so far the only way we can start it (on occasion) is to remove the battery, place computer in the refrigerator for at least 10 minutes, remove, reset the PRM, replace the battery, and then start. This is very inconvenient, and quite frankly its taken hours of work getting it from a total no start mode to the start mode with the technique mentioned above. Judging from the discussion board this is not uncommon. If anyone can shed some light on this issue we would really appreciate it. Thanks so much!

Battery capacity and loadcycles

My laptops only 8 months old and the capacity is at 84% already.
I know more the loadcycles the worse but Im still not sure how it works!

Do not rely on Coconut, compare the reading with the one in About this Mac>More Info>System Report

Battery capacity dropping and changing constantly?

I recently purchased a MBP 13" a few days ago and downloaded coconut battery to check my battery capacity and it seems to fluctuate a bit. It has been approximately 5 days since I began using the computer. I haven't been keeping the display on the highest brightness (do sometimes, but only when plugged into the charger at home) and keep other power saver settings on but the battery is still at about 5570 mAh, is this good or bad? Coconut battery says this is approximately 96% of the designed 5770 capacity. It dropped down to 5536 just yesterday and has risen back to 5576 as of this post. Is this normal because my computer is so new and it can't exactly calculate how much it has, or am I draining the battery that heavily?
I use it for school daily, and return home with approximately a 35-50% charge (depending upon usage during the school day), and begin charging when it reaches approximately 20%. Should I be charging earlier than this? I know not to let it drop to critical levels such as 10%, but not sure when I should exactly start charing to maximize this batteries lifespan. Thank you for whomever answers!

The small fluctuations you're seeing in your battery's Full Charge Capacity are entirely normal and will continue, perhaps lessening somewhat as time passes. I still see fluctuations (up as well as down) of 2-3% in my two-year-old battery's capacity, though of course the overall trend is gradually downward. It began at 4805mAh (103% of its design capacity of 4650) right out of the box, and it has been reported as low as 4320. It's now at 4530 after 137 cycles (this battery is rated for 300 cycles, unlike yours which is rated for 1000). I don't check it but every couple of months, so it could very well have gone outside that range at times without my noticing. I suspect that part of the reported variation is due to calibration error (I occasionally go longer than I should between calibrations) and part is due to limited precision in the measurement. I just don't worry about it at all, and I recommend that you don't either.

I just bought a new macbook pro 13-inch. I ran coconut battery test and it says age of the macbook is 22 weeks. And the battery load cycles shows 4 and battery capacity is 96%. Is this all normal? Does anyone have same issues?

I just bought a new macbook pro 13-inch 6 days ago. I ran coconut battery test and it says age of the macbook is 22 weeks. It shows 4 battery load cycles and battery capacity is 96%. Is this all normal? Does anyone have same issues?

"Is this all normal?"
Yes.
"Does anyone have same issues?"
What issues?
Coconut indicates an approximate battery capacity, and 96% is excellent. During testing and run-in, the MBP is charged and discharged, and a cycle count of 4 is appropriate.

Battery Failure and Kernel Panics. Help!

Hi all,
Thanks in advance for your help.
About a week ago, after I had left my computer alone for two days, it randomly shut off when the meter up top said it had 40 minutes. Then, when it was closed in sleep mode and I opened it, it told me it had to be restarted--which I, through reading the forum, found out is a kernel panic. Since then it has not given me any more kernel panics, however, it consistently turns off at about the forty minute mark. This is what I have done so far:
attempted to recalibrate the battery, which hasn't worked/I don't know if it really can because it doesn't get below 20% without shutting off. (btw, when I turn it back on, with the plug in, the battery is not dead, it's at around 20%).
have done the first three steps in the x guide to kernel panics.
Does this sound like a battery problem, and if so how do I solve that?
or does it sound like a kernel panic, hardware problem?
Thank you so much for any help, I desperately want to fix my computer.
Besos.
ibook G4 Mac OS X (10.4.8)

Hi alby23,
Welcome to the Discussions.
If your computer is two years old, it's in need of a new battery. If you open System Profiler (Apple menu>About This Mac>More Info) the battery's capacity and charge cycles will be listed. If the Capacity is ~2000 you have less than 50% of a new battery's which is 4400mAh.
You may be able to solve part of the problem by resetting the PMU. That may get the time/percentage back to a more accurate number. If that doesn't help, get a new battery.
John

Random Battery capacity!

A few days ago, I notices that my battery had weird reactions. The charge indicators fluctuates, goes into the red, back well into the black, ...
Yesterday, I checked wit coconut battery. It gave me a capacity of 1740 mAh (39%)!! Five minutes later, it showed a capacity of 4407 mAh! When I recharged the battery this morning, it stopped at the "full" capacity 2149 mAh and is now back to 4400 mAh.
My battery has 16 cycles (has been exchanged recently with the exchange program). What is going on? Any help would be greatly appreciated!

Hallo there,
i have got the same problem with my battery.
i received a new battery -also as part of the battery exchange program in germany- in October 2006. Now, since two weeks or so, the battery-life is just 1 - 1,5 hour, depending on activity (1 hour, if running iTunes and streamripper simultaneously, for example). I checked the system profiler for battery-capacity and noticed the same weired thing: max. Capacity is 2400mAh, then it's 27xxmAh some hours after, then 35xxmAh, some minutes after that it is 29xxmAh, a day later again at 27xxmAh, and so on...
i calibrated the battery and did pmu-reset (2x). charging the battery is no problem, 20 cycles were done for now.
i called apple-support, but they told me, there is no more warranty for changed batteries and they can not send a new one to me. they gave me no other advice then buying one. did anyone solve this problem, or any suggestions on that? And what may be the defective part, battery or pmu?
My system is a powerbook (bought in juli 2005) g4 1.67GHz, 512MB RAM, osx 10.4.9
greetings from germany and looking forward to your help
bastian
powerbook Mac OS X (10.4.9)

Battery Capacity And Charging

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