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At what percent should I charge my iPad ? Should I let go all the way down

8776 Views 4 Replies Latest reply: May 5, 2010 11:03 AM by RF9 RSS
go lakers Level 1 Level 1 (0 points)
Currently Being Moderated
May 4, 2010 8:08 PM
What's the best way any tips ? How do u guys do it for best battery health ?
macbook pro13inch, Mac OS X (10.6.3), 32gig ipad,iphone 3g 8gig
  • Craig Brady Level 4 Level 4 (1,790 points)
    Charge as you please with no need to fully discharge between times. Fully discharge until it shuts down every couple of months, and then fully recharge. This will recalibrate your battery charge indicator.
    IMac Intel 20" , Mac Mini PPC and MacBook Pro 2.2ghz (4GB RAM, SSD), iPad 64GB, Mac OS X (10.5), iPhone 3G
  • RF9 Level 1 Level 1 (85 points)
    It has a lithium ion battery which does not like to be fully discharged often. It's actually better to recharge it before it gets too low. It's OK to frequently 'top it off."
    In general, just use the iPad how you please and recharge it when it's most convenient. Don't intentionally run it down every time.
    Heat is an enemy of the battery. Avoid prolonged exposure to high heat.

    For more on Lithium Ion batteries, read here:
    http://www.batteryuniversity.com/parttwo-34.htm
    I've included the first 3 guidelines which are applicable:

    Simple Guidelines

    * Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns.

    * Batteries with fuel gauge (laptops) should be calibrated by applying a deliberate full discharge once every 30 charges. Running the pack down in the equipment does this. If ignored, the fuel gauge will become increasingly less accurate and in some cases cut off the device prematurely.

    * Keep the lithium-ion battery cool. Avoid a hot car. For prolonged storage, keep the battery at a 40% charge level.


    Also see Apple's iPad Battery Page here:
    http://www.apple.com/batteries/ipad.html
    MacBook Pro 13" 2.26 GHz (June '09), Mac OS X (10.5.7), iPhone 3GS 32GB Black
  • plarkin Level 2 Level 2 (180 points)
    According to the link included in the above post (http://www.apple.com/batteries/ipad.html), at the bottom of the page under "Use Your iPad Regularly", Apple recommends that you fully discharge and then charge the iPad battery at least once a month.
    Mac Mini 1.83 GHz 2 GB SuperDrive, Mac OS X (10.5), 1TB MyBook, 500GB ext drives
  • RF9 Level 1 Level 1 (85 points)
    ...rather every 30 charges. (That's once a month if you charge it daily.)
    MacBook Pro 13" 2.26 GHz (June '09), Mac OS X (10.5.7), iPhone 3GS 32GB Black

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