Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS General Gear Talk Computers 
Thread started 15 Aug 2013 (Thursday) 06:18
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Mac Pro Retina Advice.

 
killwilly
Senior Member
Avatar
866 posts
Gallery: 21 photos
Likes: 57
Joined Dec 2009
Location: Lincolnshire, UK.
     
Aug 15, 2013 06:18 |  #1

I received my new Mac Pro Retina 15" yesterday, which I am beginning to get to get to grips with. However, I do have question for any Mac owners.

Does the battery have a memory, or can it be recharged at any time? I managed to get about 7 hours use out of it's first charge before the red bar informed that I only had 10% left.


Alan. flickr (external link)
---------------
Canon 7D. Canon 15-85 EF-S Lens. Canon 55-250 EF-S Lens. Speedlite 430ex 11.
Canon EOS-M. Canon 18-55 EF-M Lens. Speedlite 90EX.
Sigma APO 150-500mm F5-6.3 DG OS HSM.

  
  LOG IN TO REPLY
Kolor-Pikker
Goldmember
2,790 posts
Likes: 59
Joined Aug 2009
Location: Moscow
     
Aug 15, 2013 07:06 |  #2

7 hours sounds just about right for the 15" rMBP. It uses lithium polymer cells, so it shouldn't degrade too fast, the battery might last for a few years. Worst case is 7000 hours of constant battery use, or a year of constantly charging and draining the battery - there's no way anyone is going to use their laptop like that.


5DmkII | 24-70 f/2.8L II | Pentax 645Z | 55/2.8 SDM | 120/4 Macro | 150/2.8 IF
I acquired an expensive camera so I can hang out in forums, annoy wedding photographers during formals and look down on P&S users... all the while telling people it's the photographer, not the camera.

  
  LOG IN TO REPLY
MaxxuM
Goldmember
Avatar
3,361 posts
Gallery: 3 photos
Likes: 22
Joined May 2007
Location: Rio Grande Valley
     
Aug 16, 2013 17:03 |  #3

Like Kolor said, 7hrs is pretty good. Apple's laptop battery charging controller is better than average and leaps ahead of laptops from 3+ years ago. Modern battery's do not have memory, but the devices they are powering can become 'off sync' and not report remaining power correctly. A good way to tell if this is happening is if you go all the way to 0% on the battery and it keeps going for ten or more minutes. To correct this, simply leave your laptop fully discharged for around 5hrs then plug it in to charge until it's 100% (once a month maximum). Newer battery's normal state is 'charging', so don't be afraid to charge it in small amounts through the day and only keep it plugged in if you're using it. Otherwise, unplug it when it has at least a 50% charge. You want to keep it charged between 40%-80% all the time. Avoid charging it to 100% unless you plan on going unplugged for a while and NEVER leave it sitting around with 40% for more than a week. The worst thing you can do to a rechargeable battery is to let it sit for days at 0% - it reduces it's life considerably. BTW, this also applies to phones and tablets.




  
  LOG IN TO REPLY
killwilly
THREAD ­ STARTER
Senior Member
Avatar
866 posts
Gallery: 21 photos
Likes: 57
Joined Dec 2009
Location: Lincolnshire, UK.
     
Aug 18, 2013 02:16 |  #4

Kolor-Pikker wrote in post #16209752 (external link)
7 hours sounds just about right for the 15" rMBP. It uses lithium polymer cells, so it shouldn't degrade too fast, the battery might last for a few years. Worst case is 7000 hours of constant battery use, or a year of constantly charging and draining the battery - there's no way anyone is going to use their laptop like that.

MaxxuM wrote in post #16214189 (external link)
Like Kolor said, 7hrs is pretty good. Apple's laptop battery charging controller is better than average and leaps ahead of laptops from 3+ years ago. Modern battery's do not have memory, but the devices they are powering can become 'off sync' and not report remaining power correctly. A good way to tell if this is happening is if you go all the way to 0% on the battery and it keeps going for ten or more minutes. To correct this, simply leave your laptop fully discharged for around 5hrs then plug it in to charge until it's 100% (once a month maximum). Newer battery's normal state is 'charging', so don't be afraid to charge it in small amounts through the day and only keep it plugged in if you're using it. Otherwise, unplug it when it has at least a 50% charge. You want to keep it charged between 40%-80% all the time. Avoid charging it to 100% unless you plan on going unplugged for a while and NEVER leave it sitting around with 40% for more than a week. The worst thing you can do to a rechargeable battery is to let it sit for days at 0% - it reduces it's life considerably. BTW, this also applies to phones and tablets.

Thanks guys for your help.


Alan. flickr (external link)
---------------
Canon 7D. Canon 15-85 EF-S Lens. Canon 55-250 EF-S Lens. Speedlite 430ex 11.
Canon EOS-M. Canon 18-55 EF-M Lens. Speedlite 90EX.
Sigma APO 150-500mm F5-6.3 DG OS HSM.

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

961 views & 0 likes for this thread
Mac Pro Retina Advice.
FORUMS General Gear Talk Computers 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is Brik
891 guests, 211 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.