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Battery life - advice needed

Discussion in 'Android Devices' started by ship69, Jul 2, 2013.

  1. ship69

    ship69 Well-Known Member
    Thread Starter


    I need some advice on charging my Galaxy Note 2.

    A) Is it bad for the life of the battery to leave it on charge (e.g. charging it over night if it is already 60 or 70 % charged?)

    B) Is it better for the life of the battery to trickle charge (on a slow charger) or to charge it on a faster charger?



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  2. pool_shark

    pool_shark Android Expert

    I have charged every phone I've ever had, whenever I want, with no harm done.
    Sepero likes this.
  3. Caloy

    Caloy Android Expert

    The best charging scenario it's too trickle charge and unplug it the moment it reaches 100%. Slow charging is ideal because it doesn't create too much heat. Overcharging your batteries well shorten it, but I don't think it will drastically shorten the lifespan of the battery if you leave it overnight. But then again I'm not an expert. That's just what I believe in. :)

    Sent using the force
    Sepero likes this.
  4. Toosploos

    Toosploos Well-Known Member

    If you are obsessed with taking care of your battery, the best thing would be to charge it up to around 80 percent and re-charge it when it falls to about twenty. In other words: keep it between 80 and 20 at all time - not higher, not lower.

    This will extend your battery life to some three years. One (me for example) could argue that it's a useless practice because you'll probably switch phones anyway within that time. You can just treat that battery like a bitch (charge it all night even though its full, have it drop all the way to zero, expose it to high temperatures etc etc) and when it's baked you just get a new battery (android, yay) or it's the next owner of your phone's problem.
    Sepero likes this.
  5. damewolf13

    damewolf13 live~laugh~love

    I have always charged my batteries whenever I get home, and leave them on the charger until I next leave the house, and I have never had any problem with any of the phones from doing this.
    Sepero likes this.
  6. ship69

    ship69 Well-Known Member
    Thread Starter

    OK so the consensus is trickle charge is better than fast charge.

    If I charge slowly over night, is that significantly better than a fast charger overnight?

    Also it's interesting that going below 20% would appear to damage the battery slightly - because as I recall the advice for PC batteries used to be to cycle it agressively now and then taking it right down to (near) zero charge and back up to full charge in a series of cycles and that this was good for it!

    Are mobile phone batteries different in this regard, then?
  7. Sepero

    Sepero Linux Guru

    It isn't "phone batteries" in this regard- it is Lithium Ion batteries. The old advice you have about discharging to 0% is for old nickel cadmium batteries, and those are almost never used for laptops anymore. All major brands use Li Ion now.

    Letting a Li Ion battery drop to 0% can irreversibly harm it. Toosploos is correct that the ideal is to always keep it between 20% and 80%. Unfortunately always stopping the phone from charging at 80% isn't very realistic. Additionally, the life of shortening incurred from reaching 100% charge is much less severe than reaching 0% charge. (So generally it's better to just leave it on the charger.)

    If you wish to store a Li Ion battery for a prolonged period of time, it is well known that, for the longest life, you should store it at 40% charge.

    Also yes, trickle is better than fast charge. This is true for every battery type I'm aware of.
    damewolf13 likes this.
  8. Onem0a

    Onem0a Lurker

    Is trickle charging better due to heat?

    Or is it just better to slowly charge you're battery?

    I don't let my battery go lower then 20% just because I am always around a charger but I do always fully charge my battery. I don't let it sit on the charger overnight though. I just charge it and once it's fully charged I take it off. I have let it sit on the charger before a few times but never very often.
  9. trainerjyms

    trainerjyms Member

    So much stress put thoughts about a battery. Just use it and buy one in two years if you need a new one. It's gotta be worth a few bucks to not think about a friggin batteries life over 3 years. I've owned every type of phone imaginable (except iCrap) and never had to buy a battery.
  10. SoberTech

    SoberTech Newbie

    Who cares! A new battery costs like $10 on Amazon so if you're battery starts going bad just buy a new one.
  11. doboy

    doboy Well-Known Member

    As SoberTech mentioned above, just buy a new battery once you wear out the OEM one.:smokingsomb:

    I purchased the Anker battery for backup and I get same, if not better, battery life compare to my 2 month old OEM battery.

    Amazon.com: Anker

Samsung Galaxy Note 2 Forum

The Samsung Galaxy Note 2 release date was September 2012. Features and Specs include a 5.5" inch screen, 8MP camera, 2GB RAM, Exynos 4412 Quad processor, and 3100mAh battery.

September 2012
Release Date

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