Do not recharge-option

Discussion in 'MacBook Pro' started by Arne, Jan 6, 2007.

  1. Arne macrumors regular

    May 14, 2006
    I have an idea for a "do not recharge battery-option".

    Imaging the following situation:

    You use you Laptop somewhere letting it run on battery power. After you have finished, the battery will still be lets say 70% charged. Then you go to your desk and do some work there, but you know, that you will use your battery again later for a little time (lets say half an hour). You now have to plug it in and it will automatically charge or you work on battery but then you might not have the required battery power later. So how do you like the idea of the option "do not charge now". Then you could start your laptop, enable the option, and plug it in. The battery could stay at 70% all the time until you later use it.

    I know I could simply remove the battery from my laptop for that but what happens when you loose power then?

    I think it ould be a nice feature for those of us who take (maybe a little too much) care of their battery.

    What do you say?

    Apple if you read this think about it!
  2. AvMac macrumors member


    Nov 12, 2006
    If you have to plug in the power anyway, why would someone want the battery not to charge?
  3. orangemacapple macrumors 6502

    Sep 1, 2006
    why would you not want your batery charged. battery life depends upn cycles of charge.
    if you use it for awhile and use, say 25% of its charge and then hook it up to the charger each time, and you do that 4 times, it's gone through 1 battery charge cycle.

    keep your battery charged at all times!

    once every couple months fully discharge you battery and fully charge it again for battery calibration. just let a bunch of power hungry apps run for awhile until it goes to sleep by itself and let it sit in sleep mode for a few hours until sleep mode turns into shutdown. then charge it fully (overnight) before using it again on battery power.

    it's like when you go on a car trip, you get gas everytime your tank hits ½ full. you don't want to get stuck someplace in traffic for a couple hours and run out of gas.

    for longest physical battery life, us it like you used to do with your desktop UPS — use the battery when necessary and let it keep itself charged when you don't need it. how often did you run your UPS all the way down?

    keep your battery charged at all times!
  4. merc669 macrumors 6502


    Jun 7, 2006
    Southern MD, USA
    I have UPS on my Desktop PC but other than a couple of Power Failures have never thought to unplug the UPS just to run it down. Does this help in extending the time or life of the UPS battery? I work at different work commands that have Critical Power units (UPS with Gen Sets) that kick on when the Mains go out. However, we have never other than on a monthly basis to see if it works kick the Mains Off to go onto the UPS. Most of the sites have a timer also that kicks the Gen Sets on after one or two minutes to take up the load. Similer to a Hospital I would assume. I would almost bet that they have some battery backup for critial areas until a Generator or Main Power kicks on. But other than Offline testing on a Montly basis and a real power outage thats the only time the UPS is actually put to a test.

  5. orangemacapple macrumors 6502

    Sep 1, 2006
    i wouldn't worry too much about the UPS battery. they'll die with age anyway. for my own peace of mind, i would run it ALMOST down once every couple years just to see how it meets specs about how long it should last and find out really how many minutes it lasts for your particular setup. you replace the UPS or the battery inside it every once in a while just like you do the battery in the emergency lights on the walls.

    and NO, they are not the same kind of batteries in your UPS—probably a gel cell.

    all batteries eventually die — whether you use them or not. that's why they put a shelf life date on them, just like your coca cola.

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