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.

So does anyone know why I have 2:40 of battery on 86% charge


Post Reply New Thread Subscribe

 
Thread Tools
Asiak

 
Member Since: May 19, 2010
Posts: 4
Asiak is on a distinguished road

Asiak is offline
Hi

I got one of the new 2010 MacBook Pros a few weeks ago. And for the most part I've just been using it at my desk plugged in but yesterday I noticed that I have significantly less battery life then what I was promised.

I charged it all night in sleep mode with no programs running and when I woke up it was at 100% with only 3ish hours of battery life. Now its at 84% with 2 hours and 42 minutes remaining.

What happened to the 8ish hours of battery life?

Oh and its the lower end model of the macbook pro - 2.4ghz i5, 320gb HD, 4 gigs of ram, Nividia 330M.

QUOTE Thanks
Stanley

 
Member Since: Aug 31, 2009
Posts: 299
Stanley will become famous soon enough

Stanley is offline
Quote:
Originally Posted by Asiak View Post
What happened to the 8ish hours of battery life?
Depends on use and things like screen brightness, speakers blasting, heavy HF and disc use, heavy ECU use processing video, heavy gaming hitting graphic card hard, etc.
QUOTE Thanks
Asiak

 
Member Since: May 19, 2010
Posts: 4
Asiak is on a distinguished road

Asiak is offline
Quote:
Originally Posted by Stanley View Post
Depends on use and things like screen brightness, speakers blasting, heavy HF and disc use, heavy ECU use processing video, heavy gaming hitting graphic card hard, etc.
I've been doing nothing heavy, I've pretty much been surfing the internet light disc playing, and words processing.

And that still doesn't explain why I leave it charging all night in sleep mode with nothing running and wake up to find the battery says 100% charge 3ish hours remaining.

The advertised battery life was 8-9 hours, at 100% charge it should say 8-9 hours or even 7 hours remaining but it doesn't.
QUOTE Thanks
Stanley

 
Member Since: Aug 31, 2009
Posts: 299
Stanley will become famous soon enough

Stanley is offline
Quote:
Originally Posted by Asiak View Post
I've been doing nothing heavy, I've pretty much been surfing the internet light disc playing, and words processing.

And that still doesn't explain why I leave it charging all night in sleep mode with nothing running and wake up to find the battery says 100% charge 3ish hours remaining.

The advertised battery life was 8-9 hours, at 100% charge it should say 8-9 hours or even 7 hours remaining but it doesn't.
Is the battery calibrated? Try running it until the laptop shuts off. Then let it sit with no charging for about 5 hours. Then recharge fully with no use ideally.
QUOTE Thanks
Asiak

 
Member Since: May 19, 2010
Posts: 4
Asiak is on a distinguished road

Asiak is offline
Quote:
Originally Posted by Stanley View Post
Is the battery calibrated? Try running it until the laptop shuts off. Then let it sit with no charging for about 5 hours. Then recharge fully with no use ideally.
I do not know if the battery is calibrated.

Though I shall try that.
QUOTE Thanks
MacKeeper

 
Member Since: Apr 16, 2010
Location: Kyiv,Ukraine
Posts: 58
MacKeeper is on a distinguished road

MacKeeper is offline
No advertisement will give you the exact accurate batterylife estimates. Only live testing can do that.
Apple just states that at certain brightness lvls(probably minimal) and performing low power usage tasks(like text reading) with not much visual info being processed and displayed the battery can thoretically run up to 8 hours.
If any of these conditions are not met then it is going to be signifficantly lower. As for the displayed time, i guess it estimates the time left with the current power saving/brightness settings.

Follow Stanley's advise, any equipment with a rechargeable battery has to be callibrated first, that may very well be one of the reasons you are getting this.
QUOTE Thanks
Asiak

 
Member Since: May 19, 2010
Posts: 4
Asiak is on a distinguished road

Asiak is offline
Quote:
Originally Posted by Stanley View Post
Is the battery calibrated? Try running it until the laptop shuts off. Then let it sit with no charging for about 5 hours. Then recharge fully with no use ideally.
Quote:
Originally Posted by MacKeeper View Post
No advertisement will give you the exact accurate batterylife estimates. Only live testing can do that.
Apple just states that at certain brightness lvls(probably minimal) and performing low power usage tasks(like text reading) with not much visual info being processed and displayed the battery can thoretically run up to 8 hours.
If any of these conditions are not met then it is going to be signifficantly lower. As for the displayed time, i guess it estimates the time left with the current power saving/brightness settings.

Follow Stanley's advise, any equipment with a rechargeable battery has to be callibrated first, that may very well be one of the reasons you are getting this.
Yes I understand that battery's are never as advertised but not so drastic as 8 hours and really being 3.

And yes I suspect its calibration too.
QUOTE Thanks
rippingviper

 
rippingviper's Avatar
 
Member Since: May 20, 2009
Location: Selkirk, Manitoba
Posts: 264
rippingviper is on a distinguished road
Mac Specs: MacBook Air 13" , 21.5" iMac i5, White iPhone 4s 32gig, iPad 3 white 16 gig, i5 Mac Mini

rippingviper is offline
I saw that one of those benchmarking companies got 8.3 hours i think it was watching movies from DVD. it was slightly higher then the previous generation. If i can find the link i'll link it up. But if your surfing the web with any type of FLASH on it your cpu is gonna jump up to 80% or so and reduce your battery life. FLASH and macos do not go well together. You could always get CLick 2 Flash it blocks flash unless you click on it to play it , saves CPU cycles and battery life for sure.

Show some Love give Reputation Reputation FAQ
QUOTE Thanks
clayneal

 
clayneal's Avatar
 
Member Since: Mar 27, 2009
Location: Lincoln Nebraska
Posts: 2,146
clayneal is a glorious beacon of lightclayneal is a glorious beacon of lightclayneal is a glorious beacon of lightclayneal is a glorious beacon of lightclayneal is a glorious beacon of lightclayneal is a glorious beacon of light
Mac Specs: late 08 macbook 2.0 4gig 320hdd10.7.3 32 gig iPhone 4s

clayneal is offline
+1 for Click2Flash for extended batt life while surfing !

MY ADVICE COMES WITH A DOUBLE YOUR MONEY BACK GUARANTEE!
QUOTE Thanks
dtravis7

 
dtravis7's Avatar
 
Member Since: Jan 04, 2005
Location: Modesto, Ca.
Posts: 27,191
dtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond reputedtravis7 has a reputation beyond repute
Mac Specs: iMac 2.4 C2D 10.9.1, iMac 2.16 C2d 10.6.8, Macbook2007 10.8.4, Mac Mini 10.8.4, iPhone 3GS IPad1

dtravis7 is offline
The 10 hours is not with brightness up full and and with flash videos playing on the web.

This will give you an idea under different test conditions.

Apple's 15-inch 2010 MacBook Pro: More Battery Life Tests, High Res Display Evaluated - AnandTech :: Your Source for Hardware Analysis and News
QUOTE Thanks

Post Reply New Thread Subscribe


« New MBP/iTunes/Iphone issue | Finder acting weird? »
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 won't charge Cinderella Apple Notebooks 5 02-17-2010 01:13 PM
Battery will not charge, considering replacement options... shlugengruven Apple Notebooks 7 09-03-2009 06:09 PM
Severe battery problems... Ricimer Apple Notebooks 1 06-28-2009 02:45 PM
3 day old macbook, new battery help!? iPlayLax Apple Notebooks 5 02-21-2008 12:41 PM

All times are GMT -4. The time now is 07:23 PM.

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?