Is it detrimental for the iPad battery health if I use my iPhone charger to charge it?

Discussion in 'iPad' started by Radon87000, May 19, 2018.

  1. Radon87000 macrumors 604

    Nov 29, 2013
    I want my iPad battery to last as long as possible so considering the fact that I charge my devices overnight will it affect my battery health if I use the 5W IPhone charger to charge my 12.9 iPad Pro? Or is it better to use the bundled iPad charger as it will charge faster meaning less heat exposure?
  2. Newtons Apple macrumors Core

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida
    Use the bundle charger. Your iPhone charge does not have enough power to properly charge your battery.

    Worry less about your battery and just enjoy your device.
  3. Menel macrumors 603


    Aug 4, 2011
    Higher power, faster charger is going to generate more heat.

    10w iPad charger it ships with isn’t particularly a fast charger, iPad is designed for far more. You wont get a measurably longer from the iPhone charger.
  4. chabig macrumors 603

    Sep 6, 2002
    Both chargers will work. The one that is capable of more power will charge faster. Neither will affect the lifespan of your iPad.
  5. JPack macrumors 68040


    Mar 27, 2017
    Your iPhone charger is probably best for long term health.

    5W means a slow overnight charge. As a result, very minimal amounts of heat are generated.

    The two major things are detrimental to li-ion health: 1) heat and 2) time spent at 100%.
  6. kevink2 macrumors 65816

    Nov 2, 2008
    I ended up buying the 29W charger for when I do want to charge faster. Either my phones or my iPad Pro. But normally, I use a 7.5W wireless charger for my iPhone X, and an 5 port USB charger that can do up to 2.4 amps for a port (or 8 overall) for overnight usage.
  7. ChrisChaval macrumors 6502


    Aug 30, 2016
    actually the contrary is true, in both cases:

    the faster you charge your lithium ion battery the more heat is potentially being generated and lithium batteries do not like heat (nor freezing temperatures)

    while fast charging can normally be safely applied up to a charge rate of 50%, using your iPad charger just means using the charger that has specifically been designed for your iPad's battery. you could use your phone charger, it just would take longer to charge the battery and make your patience wear out way before your battery does

    referring to your second statement, charging your battery over night, implies charging your battery to a 100% charge state. lithium ion batteries do not like that either and prefer to be kept at lower charge states which over time will result in higher battery health and higher cycle counts.

    Unfortunately most integrated electronics are not designed to stop charging our batteries at a more healthy charge rate of around 60 - 80%, which would be better for long term battery health but let the charge go almost all the way up to 100%, which while not dangerous is not ideal.

    having said that, I do not care about all of this too much and charge my devices whenever I want to whatever charge state it is going to be. batteries age anyway, more or less gracefully, and reach their end of life after 3-5 years, if you use them or not

    what really is important though is using the original charger that came with your device. People have been killed by cheap unsafe third party chargers:
  8. rui no onna macrumors 603

    rui no onna

    Oct 25, 2013
    Yep, this. iPhone charger wouldn't hurt. It'll just be slow at charging the iPad. Mind, for overnight charging then iPhone charger is likely easier on the battery.
  9. pentool macrumors member

    Jul 20, 2013
    I had my iPad 3 for 6 years and 2 months. Used it regularly on a daily basis and charged it with its supplied adapter. I recently traded the iPad 3 in for a new model. Even after so many years, I was able to get 11 hours of use out of it on a single charge. (Granted, I have a very dark room and so my display brightness was always on the lowest setting.)

    Unless Apple deliberately messing with the battery life, I think you should be able to get quite a few years out of them.

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