MacBook Pro :: No Second Screen On Battery Power?
Nov 16, 2010Am I right in assuming that my MBP will switch off power to the Mini Displayport, when running on batteries ?Well mine does, but want to make sure that's right ?
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MacBook :: Set Screen Brightness Battery / Power?
Jan 19, 2009I am just wondering if there is a way to have a brightness preset for when the macbook is plugged into the wall and running on battery?Eg. When plugged in I want 100% prightness, but when running off battery it automatically lowers the brightness.Right now I manually lower it and some times forget.. especially times when I need that extra bit of battery power
View 1 Replies View RelatedMacBook :: Screen Goes Blank When I'm On Battery Power
May 20, 2012My screen goes blank when I'm on battery power. What should I do?
Info:
Mac OS X (10.5.6), MacBook Pro
MacBook Air :: Screen Brightness Suddenly Increase Or Decrease / Happens Under Battery Power
Jul 8, 2008I've noticed recently that my screen brightness will suddenly increase or decrease by itself. When I press one of the control buttons it indicates that it is 3 or 4 steps higher or lower (obviously allowing for the fact that pressing a control button moves you one step anyway!) I have the 1.8 SDD. I love the machine....but anyone have any ideas about this. It only happens under battery power.
View 8 Replies View RelatedOS X :: White Macbook Runs On AC Power (no Battery) But Not On Battery?
Apr 29, 2010Just wondering if anyone has ever encountered this or if any experts out there know of the issue.I have a spare White Macbook (late 2008: Core 2 Duo 2.1GHz, 1GB, 120GB) that I'd like to set up for my brother to use to introduce him to the wonderful world of Macs. The problem it is having is that when I have a battery connected to it (I tried 2 different ones included a known-good one that is brand-new just purchased from Apple) it powers on and gives me the chime, but then immediately shuts off unexpectedly giving that little "whine" sound like if it just lost power all of a sudden. However, when i take out the battery, and just plug it into the Magsafe AC charger it works fine. Also when just trying to run on battery it does not turn on at all. Here's some cliffs:
1) Macbook with just battery does not turn on
2) Macbook with battery + Magsafe AC charger connects powers on, gives the chime, but then immediately shuts off making the "whine" sound as if the power was suddenly cut off
3) Macbook with no battery connected and just the Magsafe AC charger connected works fine.Do you guys think this is either:
A) battery connector issue (the little piece with the metal wires that the battery connects to. ~$50 part)
B) Logic Board issue
I already tried resetting the PRAM and SMU to no avail.
MacBook Pro :: Battery Running On Reserve Battery Power
Jun 18, 2010I just turned on my 13" MBP and got this message. Apparently, this is supposed to come up when there is only like 5% charge left. My battery indicator at the top of the screen said there was 22% charge left. Also, according to IStat, my battery's health has already dropped down to 97% after only about 2 weeks and 5 cycles. Is this normal? I'm going to try recallibrating my battery by fully charging it and then letting it fully drain. Is there a good chance that this solves this problem?
View 1 Replies View RelatedMacBook Air :: "Proper" Battery Usage For New - Aka Power Supply Vs Battery?
Nov 29, 2010As I just bought a 13" MBA, I am still in my "babying" phase of the machine and want its battery power/capacity to last as long as possible. I have already done the battery calibration recommended by Apple (not even sure if its 'necessary' but I did it anyways), with charging, resting, draining, resting, and re-charging. But now I am worried about the battery cycles. Should I only plug my MBA in when the battery is close to being drained (aka use it on battery power for most of my usage?) or is it okay to drain the battery to like 80% remaining, charge, and then drain to 70% remaining, then charge again? Im not sure if Im making sense, but basically I don't want to be wasting these valuable cycles, as they seem to determine battery health and longevity. So what is the proper battery usage for the MBA, or is it basically use off power when you want and use on power supply when its available?
View 14 Replies View RelatedMacBook :: "Battery Not Charging, Power Source: Power Adapter"
May 22, 2012I recently discovered my computer had died while it was sleeping. I tried charging it but am recieving the "Battery not charging, power source: power adapter" status.My power cord light is green, always. and the computer dies instantly when I remove the magsafe.
I've tried the "remove the battery, press the power button, plug in the magsafe" troubleshooting process, but it doesn't work.I've noticed that even with the battery out, the charger reads a green light.I've tried several outlets with the same results.Here are my battery statsÂ
Battery Information:Â
Model Information:
Serial Number:Â Â Â DP-ASMB016-384e-7636
Manufacturer:Â Â Â DP
[code]....
Info:
MacBook, Mac OS X (10.5.8)
PowerPC :: Powerbook G4 Won't Power Up - Battery Indicator Showed One Flickering Power Circle?
Mar 19, 2008My girlfriend has a 12 inch Powerbook G4. She noticed that the battery life was starting to dwindle. Tonight, she tried using it. It wouldn't power up. The battery indicator showed one flickering power circle. The adaptor has the green circle on it, indicating the battery has a full charge. However, the computer won't charge up.I've read the 12 inchers don't have separate PMUs. Could that prevent the machine from starting? She was using it earlier this evening, as she e-mailed me pictures from our vacation.
View 10 Replies View RelatedPower Mac :: G4 Doesn't Power On Internal Battery Replaced?
Apr 30, 2012tried 2 boot up my G4, nothing, replaced internal battery, no status change, advice? would still like to be able to use it if possible and affordable
Info:
G4 dual os boot, Mac OS X (10.4.11), will also boot up in OS 9.2.2 when
MacBook Pro :: 10 Min To Power Up When Battery Is Down?
Jul 29, 2010I have a mid-2007 MBP. Here is my issue...it's been more than a year that when I totally discharge my battery (meaning the MBP shuts down), when I connect it back to the charge it is taking abotu 10 minutes to power up again...it was not the case before and my wife's MB is working well....meaning when it is down, just connecting the charger the MB is back on within a sec.
I have changed my battery but it did not change anything, I called Apple and they recommended me to restore snow leopard...which I did...I still have the same issue.
Does anyone experience this? Any idea what is happening (HW or SW issue) and is there a potential fix?
Battery Won't Power MacBook
Jun 21, 2012I have just bought a second hand MacBook laptop and it has a wierd battery issue that can't seem to find mentioned anywhere.Initally all seemed fine, but then I noticed the battery wasn't charging and the battery menu reported no battery found, also the MagSafe plug had not light; some searching instructed me to reset the SMC which I did, and everything was fixed, I could runs the computer from the battery and the power lead charged the battery. But now (just a day later) the battery won't power the computer at all - the computer will only work if the power is connected - however the light is shown on the MagSafe plug and the battery is being changed, but if I disconnected the power lead, first I see the restar/sleep/shut down dialog that you see when pressing the power button, then shortly after the computer turns off, if the power if reconnected, it boots from scratch, so it wasn't asleep!
View 2 Replies View RelatedMacBook Pro :: 17 I5 Battery Power Not Charging?
May 29, 2010I have a brand new MBP 17inch, the battery would not charge with the charger. It basically went close to empty and then I decided to shut down and restart to see if it will reset and start charging.. Now the MBP doesn't even turn on
View 5 Replies View RelatedMacBook Pro :: Battery Is Losing Its Power?
Apr 4, 2012I am wondering if my battery is losing its power? Fully charged I get 3 hours at the very most from it. I started this morning at 100% and after 10 minutes am down to 85%. This computer was purchased in 2008.
View 1 Replies View RelatedMacBook Pro :: I7 Processor Will Not Power Up After Battery Ran Out
May 21, 2012The 2011 macbook pro with i7 processor will not power up or charge at all. The problem started after my battery ran out and the computer shut down. Since then, when I plug in the charger only the green light turns on. In addition the light on the base (in front of the keyboard) flashes. Nothing happens when I hit the power button. The charger still works on other laptops. To emphasize, the screen will not even light up. It sounds as if the computer is starting (for less than a second) before stopping, only to start again but that is purely speculative.
Info:
MacBook Pro
MacBook Air :: Would A New 11" With I7 Use Much More Battery Power Than With The I5
Jun 13, 2012Before buying a new 11" Air I need to know if one with the i7 OS would use appreciably more battery power than one with the i5?
And, since I am not a gamer or user of complex software, is there any real advantage to going with the i7 over the i5?
Info:
MacBook Air
MacBook :: Use Of AC Power If Battery Dies?
Jun 23, 2012My MacBook is still going strong, but in the event that the battery dies, will it still run on AC power?
Info:
MacBook, iOS 5
MacBook Pro :: Battery Calibration - Power Cord
Oct 12, 2010Well I just scored a 15 inch 2.4 from Bestbuy for 10% off. SOmebody just returned it having never even used it, but they had to discount it because it was opened. I love it love this thing!We did migration from our imac and everything came over. AmazingOne question about calibration. I charged it fully and let the power cord be in it for an extra 2 or so hours. I then used it unplugged until it basically shut off due to no power. Cant I just plug it in and let it charge all the way without letting it sit for 5 hours. Its not sleeping I dont think. It actually shut off suddenly as it was at zero percent. There is no power to it at all that I can tell. Will charging it now without leaving it unplugged for 5 hours ruin the calibration??
View 2 Replies View RelatedMacBook Pro :: Switches Itself Off / Was Running On Battery And Had 60% Power Available?
Dec 2, 2010I have a late 2007 MBP 15inch 2.33Ghz Core 2 Duo. I have had since new and no problems. Over this last week I have had the same issue a couple of times. The MBP just switches itself off. The first time it did it, it was running on battery (I was using Aperture) and had 60% power available. It would refuse to re-start until I connected it to the mains and then it ran fine.
Then it did the same thing overnight at some point. I had left it connected to the mains (as I always do at home), had shut the lid to put it into sleep mode. When I came back it was switched off. No-one had touched it whilst I was away but yet it had just turned itself off.The only thing that I noticed was that when I started it up both times the little light on the magsafe connecter kept flashing between orange and green. However when the computer booted into OS X both times it showed a reasonable amount of power in the battery.
MacBook :: Battery Charging And Power Source
Apr 27, 2009My macbook is charging and it's at 33% and it says it has 7 hours remaining until it's complete. iStat tells me that my battery is still 100% with 70 cycles. My macbook is only 6 months old, and this battery issue started happening just a few days ago. Could it be the charger? sometimes I plug in the charger and the light doesn't come on sometimes. Also something odd that I noticed, when my charger isn't plugged in it still says its power source is from the power adapter. Could it be from using my parents macbook pro charger on my macbook?
View 1 Replies View RelatedMacBook Pro :: Using First Time - Power From Battery Or Mains?
Jan 6, 2010In the coming days I am supposed to be in delivery of my new MacBook Pro and was wondering if it is better to just use the built in battery to power on my MacBook Pro for the first time and just power it off the battery until the battery is fully discharged? Or should I power my MacBook Pro from the power adaptor?
View 2 Replies View RelatedMacBook :: Won't Show That It Is Running On Battery Power?
Jan 16, 2010I have a MacBook (purchased in May) that has issues with the battery status. When the MagSafe Adapter is plugged in, it shows that the battery is charging, but when the MagSafe Adapter is unplugged from the computer, the computer does not recognize that it is running on battery power. (It still shows that it is running on A/C power.) I have already reset the System Management Controller, and it didn't work. What else can I do?
View 5 Replies View RelatedMacBook Pro :: Replacement Battery And Power Supply
Jun 21, 2010I'm just wondering if anybody knows whether it is possible to obtain a replacement battery and power supply for such an old computer. My 17-inch MacBook Pro is about five years old, and the battery seems to be completely dead. It will not start up, will not take a charge, and cannot be used, whether plugged in or not. A multitester test suggests that the power supply no longer works either. My MacBook has one of the older-design power supplies, with the circular port, rather than the newer, magnetic, rectangular ones. I'm planning on getting a new MacBook in the near future, but I need to access some things that are saved on my old Mac's hard drive, if at all possible.
View 3 Replies View RelatedMacBook Pro :: 13" Battery Draining While On AC Power?
Jun 24, 2010The title says it all, basically my MBP's battery drains even if the computer is plugged. When I sat at my desk to use my MBP earlier today I noticed the battery was charging. That seemed very weired, I was sure it was at 98% last night. I decided to switch my computer off and let it charge all the way up.
When I turnt on my computer again i checked the battery and everything seemed normal, but after half an hour or so I noticed that my battery status icon had chaged from charged to not charging. I loaded up Coconut battery and the battery was slightly over 90%...and it's still draining out while tipyng... The AC socket is fine and I have an HDTV connected to the same power source. Needless to say the tv is working normally... I do not have an Apple shop nearby, the closest is over 200 km (approximately 140 miles) away.
MacBook Pro :: Keep Plugged In To AC Power While Using It Damaging Battery?
Mar 16, 2012I have a late Macbook Pro 13''I using it at home about 10 hours a day. so it's allways plugged in to AC Power while I'm using it, and when I'm not using, I disconect it from Power.I want to know if this damage my battery OR not? Or should I running my Macbook on Battery? and recharge it (and cycle monthly ... )
Info:
MacBook
Pro, Mac OS X (10.7)
MacBook Pro :: Won't Charge If It Runs Out Of Battery Power
Apr 25, 2012My macbook pro won't charge again or even start up if it runs out of battery power, so I use my wife's power cable it charges and starts .. I have to charge it with her's for 20 min, then I can use mine and it works fine ..
Info:
MacBook Pro, Mac OS X (10.6.8)
MacBook :: Battery Loses Power Fast?
May 23, 2012I bought a new battery for my 4 year old macbook aluminum, but the new battery loses power almost as fast as the old battery. Is there something wrong with my computer or is it the battery?
Info:
MacBook Pro, Mac OS X (10.7.4)
MacBook :: Randomly Shuts Off While On Battery Power
Jun 25, 2014I have a 13-inch Macbook, Late 2008 model, using iOS Mavericks. While on battery power, the laptop will randomly just turn completely off, despite still having plenty of battery power left. I know it's not a calibration issue where the battery is dead but appears to have charge left, since I'm able to turn the computer back on again and continue using it.Â
Battery info:Charge Information: Charge Remaining (mAh): 606 Fully Charged: No Charging: No Full Charge Capacity (mAh): 2609 Health Information: Cycle Count: 157 Condition: Service Battery Battery Installed: Yes Amperage (mA): -1265 Voltage (mV): 10855Â
MacBook Pro :: Will Not Power On AC Adaptor When The Battery Is Connected
Jun 29, 2014My macbook pro will not power on the AC adaptor when the battery is connected, I have to disconnect the battery to get it to power up on the AC Adaptor, tried another battery still don't work just has a X on the battery icon at the top. Running Mavericks at the Moment.Â
View 3 Replies View RelatedMacBook Pro :: Battery Life Increase With SSD - Power Efficient?
Nov 6, 2010There are some SSD that use very little power like the Intel SSD. Do you guys notice a battery life increase with a SSD that is power efficient?
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