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Battery Question

Discussion in 'Android Devices' started by AaronRodgersFTW, Jan 14, 2011.

  1. AaronRodgersFTW

    Thread Starter

    What is the battery life like on this unit? That will be the deal breaker for me. around 10 should suffice.

  2. Proph

    Proph Android Enthusiast

    at CES moto said it was 10 hrs of contant video playback, i hope they weren't lying. question is also though that the wifi or 3g/4g chip wasn't running when they came up with the 10hr number so usability might be 8-10 which is still a winner for me.
  3. zardoz

    zardoz Member

    I see the Xoom doesn't have an accessible battery. I've never had to deal with a product this expensive where I can't change the battery if I need to. Anyone have an idea how long the Xoom's will last, and what process you have to go through to change it? Mail it in, or are there stores which can do it for you?
  4. gobluejd

    gobluejd GOBLUE!

    Majority of Apple products.

    I believe similar to iPad, 8-10 hrs.
    marctronixx likes this.
  5. zardoz

    zardoz Member

    Change not charge? Will it last a year before I have to get a new one, two years?

    (My iPod will be 6 this year, and only lately hasn't wanted to hold a charge...hoping the Xoom has similiar longevity)
  6. gobluejd

    gobluejd GOBLUE!

    Most of Apple products you can not change the battery.

    I would assume it will last a while. I will tell you in 2-3 years. ;)
    marctronixx likes this.
  7. marctronixx


    the Xoom will be obsolete in 2 years. the lithium ion battery should maintain its rated charge for 19 months, after that its charge state in the cells will begin to lessen. this is not the fault of the Xoom, its the ancient battery technology. lithium ion tech is decades old and its been well behind the curve.. this is on reason the evo has had bad press about battery life. its not the handsets fault. the battery tech is just obsolete.

    go to the apple ipad forums and read about battery life (at least during a typical days use) to get an idea. granted the Xoom has a much more powerful processor than the ipad 1st gen so the battery life could suffer a tiny bit.. also depends on how moto Xoom handles power management. but im rambling now... :D

    Zardoz, unless the battery malfunctions (rare/unlikely) you will sell your Xoom well before the battery life becomes an issue..
    gamul1, zardoz and gobluejd like this.
  8. zardoz

    zardoz Member

    Thanks! Though, I'm more one to hold onto a good gadget as long as it's still working, rather than sell & upgrade.

    (I don't know anything about batteries- but if the lithium/ion is obsolete why don't they use whatever replaced it? Just too pricy?)
  9. marctronixx


    no sir the cell chemistry in Lithium Ion (Li-Ion) only has so much energy density per kg.

    the marketplace wants things smaller, faster, better while also increasing battery run times. unfortunately, compromises in battery design have to be made. Li-Ion is also extremely unstable so there has to be electronics in place to monitor the cell chemistry, discharge/recharge rate, etc etc.. however as a result of this, you can only pack so much into a small space. so as things get bigger (screens, CPUs, full HD recording/streaming larger RAM--which requires power) the battery packs get smaller to make room for the other electronics, which leads to marginal or lesser battery life than a comparable product (ipad vs. Xoom--Xoom has newer tech, faster processor, etc so battery life wont be the same as the ipad)

    there are newer technologies that are on the horizon.. the trick now is to shrink those new cell structures down to a mass-produced size.

    pound (or kg!) per pound, Li-Ion has the most energy density per cell of the other commercially available chemistries (nickel metal hydride, and nickel cadmium)...
    Catfish likes this.
  10. ckeegan

    ckeegan Android Enthusiast

    I'm very surprised we've never seen the mAh for the XOOM. I'd at least like to know how it measures up to other tablets in that regard.

    One of the Motorola Support forums managers posted today, that he ran a battery test on a XOOM. He played Hancock (approx 90 mins) at full screen, and had 83% remaining after the movie ended. If that math held true, that means roughly 9 hours of video playback, which is in line with what Sanjay Jha said at CES (approximately 10 hours).

    Not too shabby...can I have it now? :)
  11. marctronixx


    thats good, however factor in using the wifi radio to stream and/or the 3G radio, using the camera to shoot HD video, running the GPS to get to a destination etc.. those "constant" streams on battery power will certainly affect that.
  12. ckeegan

    ckeegan Android Enthusiast

    Oh, I know, but you're probably not going to be doing those things while watching a movie.

    I think video playback is really the only way to accurately compare devices, since web browsing can vary based on what you're browsing, game play can depend on what game you're playing, etc. You can always play the same movie on two different devices, and see which one lasts longer.
  13. marctronixx


    heh... you dont know me.. i make noise stuffing a mattress! (im silly.. dont ask why)

    why sure, i would use the radio to stream a movie from playon! ;0)

    im not worried about battery life.. i will have plenty of power every where i go with this sucker.. :)

  14. NAYo2002

    NAYo2002 Well-Known Member

    Low023 and marctronixx like this.

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