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Support Stop charging at 100%?

Discussion in 'Android Devices' started by Stingrayracing, Dec 18, 2014.

  1. Stingrayracing

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    I don't know if this has been addressed before but here we go. I usually put my Turbo on charge when I go to bed and pull it off charge when I get up. I have noticed that if I grab a cup of coffee and check a few emails and then put the phone back on charge until it reaches 100% and unplug it takes considerably longer for the battery to discharge down to say 95%. If I don't recharge after the initial charging my battery will drop to 95% or below much faster with the same usage. Does this mean that once the battery reaches full charge over night it starts to discharge slightly while on the charger? I get much better battery life if I unplug as soon as it reaches 100%. Anyone else notice this?
     

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  2. budfox66

    budfox66 Well-Known Member
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    I've noticed this too...charge lasts longer if you take phone off charger soon after reaches 100.
     
  3. Chasvs

    Chasvs Member
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  4. doogald

    doogald Android Expert
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    Yes, I think that this is exactly what happens. Li-ion batteries are dangerous when they near full charge - their temperature can spike, etc., so charging circuitry will shut down charging and occasionally trickle to keep it relatively full charged.

    I think that 100% charge is an approximation and battery packs never get fully charged (just as 0% is a level that's higher than true full discharge and leaves the battery pack with enough capacity to run the charging circuitry.)

    See http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries for a lot more info...
     
    codesplice likes this.
  5. NO1emma

    NO1emma Lurker
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    Yes. That make sense.
     

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