1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Portable powerbank outputs

Discussion in 'General Chit Chat' started by austin, Oct 2, 2017.

  1. austin

    austin Well-Known Member

    Likes Received:
    641
    Trophy Points:
    113
    One for Mr Lutin Ibthink.....I bought a portable power bank from Aldi today -£9.99 for 7800 MaH. Lithium Ion batteries. A bargain I think. It has two outputs one rated for 5v 1Amp, the 5v 2.1 amp.

    I mostly want the thing for recharging mobile phones and Bluetooth headsets when camping.

    Question - if a plug my phone into the 2.1 amp output will it damage it? My phone needs a 0.5 amp charger but has always been fine plugged into a 1amp device. But 2.1amp output may be a bit too much. I always assumed a device could only consume the power it needed and if more power was available it didn't get used. Eg, mains ring at home rated 30amp but if I plug in a 60watt bulb (0.25amp at 240v) the 30 amps available does not damage the bulb and I only use 0.25amps worth of electricity.

    Is it the same for charging batteries or does the battery just suck up electricity as fast and as much as it's available with potential damaging effects.
     
  2. Philwhiskeydrinker

    Philwhiskeydrinker Well-Known Member

    Likes Received:
    344
    Trophy Points:
    83
    I'm sure your phone only uses whatever it uses.
    My powerbank has the same set up & I just plug it into whichever port without a second thought.

    Thinking about it, do you give a second thought of the fuse rating when charging with a ciggy socket 'cos I don't.
    I'm pretty sure modern eleccys are pretty good at sorting their own stuff out (within reason).



    Sent from my SM-A320FL using Tapatalk
     
  3. OhJ

    OhJ Active Member

    Likes Received:
    87
    Trophy Points:
    28
  4. austin

    austin Well-Known Member

    Likes Received:
    641
    Trophy Points:
    113
    Thanks. A bit of overkill for charging a phone though. :shoot:
     
  5. austin

    austin Well-Known Member

    Likes Received:
    641
    Trophy Points:
    113
    I just googled it and answered my own question. It was as I suspected - the device only consumes what it needs. I just wondered if connecting battery to battery change the principle. It seems it doesn't, probably coz there's actually some gadgetry in-between.
     
  6. Lutin

    Lutin Administrator Staff Member Forum Supporter

    Likes Received:
    356
    Trophy Points:
    83
    Yep, that about covers it.
     
  7. DaveS

    DaveS Administrator Staff Member Forum Supporter

    Likes Received:
    109
    Trophy Points:
    43
    I’ve just read an article on mobile device charging. It’s an interesting area.
    The only other thing I can add is that the phone will suck more juice initially and then tail off at around 80% charge.
    Quite often the 1.2 amp chargers won’t put enough juice in to my iPhone 7 Plus than it’s using at that time so even though on charge it goes backwards, albeit more slowly.
     
  8. -XP-

    -XP- Active Member

    Likes Received:
    240
    Trophy Points:
    43
    Better to query before the bang though, Austin. :thumbsup:
     

Share This Page