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Re: What sets the charging rate?

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Tim <onelydad58@gmail.com> wrote:
> nospam <nospam@nospam.invalid> wrote in
> news:261120180852212967%nospam@nospam.invalid: 
> 
> > In article <XnsA9A6336EF683timothybilyahoocom@69.16.179.28>, Tim
> > <onelydad58@gmail.com> wrote:
> > 
> >> >> Znother data point: I hooked up my Maxboost Electron power bank,
> >> >> and it is charging at 1 amp. The port it is connected to is
> >> >> capable of outputing 2.1A.
> >> > 
> >> > that means the device you plugged into it only draws 1a. 
> >> > 
> >> But the USB 3 ports on my computer provide 1.5A, so why doesn't it
> >> charge at that rate rather than .5A?
> > 
> > it can provide *up* *to* 1.5a. if a device only requests 500ma, then
> > that's what it gets.
> > 
> But it was 'requesting' one amp from the power bank. Why not do so from the 
> wall charger?

  I've also seen such seemingly inconsistent behaviour, i.e. different
currents drawn from different chargers, while the *highest* current is
*less* than the capacity of the smallest-capacity charger.

  For example at some state of charge (SoC), my Samsung tablet might
draw some 750mA from its 2.1A charger, but on a 1A (also Samsung)
charger, it draws only about half that, 375mA. However, when checking
the *voltage*, the 2.1A charger delivers 5.18V, while the 1A charger
delivers 4.96V.

  So I'm quite sure that the 'inconsistent' below-charger-capacity
charging currents are caused by the chargers delivering slightly
different voltages.

  If your power monitors can also measure current and voltage, you might
want to check if different voltages explain the seemingly inconsistent
currents.

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What sets the charging rate? Tim <onelydad58@gmail.com> - 2018-11-23 22:52 +0000
  Re: What sets the charging rate? Tim <onelydad58@gmail.com> - 2018-11-24 04:24 +0000
    Re: What sets the charging rate? micky <NONONOmisc07@bigfoot.com> - 2018-11-25 00:10 -0500
      Re: What sets the charging rate? "Carlos E.R." <robin_listas@es.invalid> - 2018-11-25 14:12 +0100
        Re: What sets the charging rate? micky <NONONOmisc07@bigfoot.com> - 2018-11-25 21:22 -0500
          Re: What sets the charging rate? "Carlos E.R." <robin_listas@es.invalid> - 2018-11-26 15:21 +0100
            Re: What sets the charging rate? micky <NONONOmisc07@bigfoot.com> - 2018-11-27 03:52 -0500
    Re: What sets the charging rate? nospam <nospam@nospam.invalid> - 2018-11-25 00:42 -0500
      Re: What sets the charging rate? Tim <onelydad58@gmail.com> - 2018-11-26 06:18 +0000
        Re: What sets the charging rate? nospam <nospam@nospam.invalid> - 2018-11-26 08:52 -0500
          Re: What sets the charging rate? Tim <onelydad58@gmail.com> - 2018-11-26 14:03 +0000
            Re: What sets the charging rate? nospam <nospam@nospam.invalid> - 2018-11-26 09:11 -0500
              Re: What sets the charging rate? Tim <onelydad58@gmail.com> - 2018-11-26 15:45 +0000
                Re: What sets the charging rate? nospam <nospam@nospam.invalid> - 2018-11-26 10:49 -0500
            Re: What sets the charging rate? Frank Slootweg <this@ddress.is.invalid> - 2018-11-26 16:19 +0000
              Re: What sets the charging rate? 123456789 <12345@12345.com> - 2018-11-26 09:33 -0700
                Re: What sets the charging rate? nospam <nospam@nospam.invalid> - 2018-11-26 11:57 -0500
              Re: What sets the charging rate? "J. P. Gilliver (John)" <G6JPG-255@255soft.uk> - 2018-11-26 16:52 +0000
                Re: What sets the charging rate? nospam <nospam@nospam.invalid> - 2018-11-26 11:57 -0500
                Re: What sets the charging rate? Frank Slootweg <this@ddress.is.invalid> - 2018-11-26 18:49 +0000
                Re: What sets the charging rate? "Carlos E.R." <robin_listas@es.invalid> - 2018-11-27 04:09 +0100
                Re: What sets the charging rate? "J. P. Gilliver (John)" <G6JPG-255@255soft.uk> - 2018-11-27 16:42 +0000
                Re: What sets the charging rate? Tim <onelydad58@gmail.com> - 2018-11-27 22:43 +0000
                Re: What sets the charging rate? "Carlos E.R." <robin_listas@es.invalid> - 2018-11-28 14:08 +0100
                Re: What sets the charging rate? Andy Burns <usenet@andyburns.uk> - 2018-11-28 13:27 +0000
                Re: What sets the charging rate? "Carlos E.R." <robin_listas@es.invalid> - 2018-11-28 14:06 +0100

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