Topping off battery OK?

Discussion in 'HTC Droid Eris' started by tonypantuci, Feb 11, 2010.

  1. tonypantuci

    tonypantuci New Member

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    I have a tendency to top off the battery several times a day by charging via wall outlet or when plugged into my PC. Is this bad for the HTC Eris battery? Any ideas on best ways to keep the battery happy?
     
  2. JhankG

    JhankG Silver Member

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    Won't hurt the battery one bit. You don't have to worry about conditioning or overcharging these batteries.
     
  3. BayouFlyFisher

    BayouFlyFisher Rescue Squad Rescue Squad

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    These batteries have no memory effect like in the past.
     
  4. natediddy1120

    natediddy1120 Silver Member

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    If its got a lithium battery, which I'm pretty sure it does, then the best way to charge is by doing partial charges...meaning don't let it go dead, and don't let it get all the way full all the time either.

    That will lengthen the life of the battery in the long run
     
  5. gentlefury

    gentlefury Member

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    wow, NiCad hasn't been around since the 90's and people are STILL afraid of battery memory....when will that die already??

    LiON battery however do have a limited charge discharge cycle before they break and can no longer accept a charge...so over charging will eventually just cause it to be dead and no longer able to take a charge....but most batteries will last over a year.
     
  6. Backnblack

    Backnblack Premium Member Premium Member

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    It was beat into them as they were growing up....give it a while.
     
  7. jtebrak

    jtebrak New Member

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    I can't speak to the droid's peticular battery, but I use Lion batteries in some R/C stuff which are rated in excess of 500 cycles. I have some batteries that are well pas that and are still holding a good charge. They are also much higher output and much faster discharge rates than the droid's battery which tends to be harder on the battery.
     
  8. myriad46

    myriad46 Member

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    Still have NiMH (which do the same thing) in my cordless power tools and that is what's in almost all Hybrid cars.
     
  9. LtKen

    LtKen Silver Member

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    My dad used to beat me with his lithium batteries...
     
  10. mikes

    mikes Member

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    It's not memory effect, which a normal user would never run into with NiCd cells. (properly used, a "battery" consists of multiple cells - it's not an "AA battery," it's an "AA cell") True NiCd memory effect only occurs when cells are discharged the exact same amount (to within a few percent) over many cycles.

    The problem many people call "memory" is actually voltage depression, an effect which gets amplified when cells are combined into a battery. Basically, the different cells end up sharing the load unequally, causing a premature end to the battery as a whole. NiMH cells/batteries can suffer from voltage depression.

    Lithium batteries do not suffer from voltage depression (or memory effect, for that matter).
     
  11. snyluc13

    snyluc13 Member

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    lmao... you too? I thought i was the only one.

    we should form a support group.
     
  12. TJTHEBEST

    TJTHEBEST New Member

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    So how many cycles does the eris battery have. and what is a cycle? Is it a full discharge/charge or does it count as a cycle everytime you plug it in?
     
  13. Moondonkey

    Moondonkey Member

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    The Lithium Ion batteries are pretty resilient.

    My advice... use the battery however is best for you to keep the phone working when you need it.

    I don't know about the Eris, but the Droid battery is only like $30, so if you if you work it to death.. get a new one.
     
  14. mikes

    mikes Member

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    Lithium cells are rated for full discharge/charge cycles. Topping them off is not a full cycle. Roughly, think of it like - topping up from 3/4 only counts as 1/4 cycle. It's actually a bit better than that - lithium cells do better with top-up cycles than with full cycles.

    But, at the same time, lithium cells have a limited lifetime. Unless you store them in the freezer, 3-4 years is the most you can expect, regardless of the number of cycles.

    Here's what Motorola has to say (DOD = depth of discharge):
    - from this page.
     
  15. droidavie

    droidavie Guest

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    silly silly boy
     
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