Bristol Digest, Vol 544, Issue 1

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Today's Topics:

1. Re: Android PS Conundrum -(OT) (Alex Butcher)


----------------------------------------------------------------------

Message: 1
Date: Mon, 31 Mar 2014 12:26:42 +0100 (BST)
From: Alex Butcher <lug@assursys.co.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Android PS Conundrum -(OT)
Message-ID: <alpine.LFD.2.03.1403311204080.6014@nffheflf.pb.hx>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed

On Sun, 30 Mar 2014, Peter Hemmings wrote:

> I have a Moto G which does not come with a power supply, it only comes with
> a micro usb to usb cable that works OK from my TV.
>
> I have two "CE" micro usb 5 volt supplies, one 1.5 amp and the other
> 2 amp.
> One of them came with an android TV dongle the other I bought for a raspberry
> pi, both work with my android dongle and not with the
> Moto G. The phone does not detect any charger, I have tried charging from
> sleep, switched on and off, nothing detected.

My OH charges hers with the charger and cable that came with her HTC
Wildfire S
<http://www.amazon.co.uk/Genuine-HTC-Charger-Wildfire-Inspire/dp/B004VR9US6>.
I think it claims to output 5.0V at 1A.

I charge my Moto G with a bunch of possibly-fake Samsung Galaxy S II
chargers and one definite genuine original that came with my GS II. The
possibly-fake ones were bought from I-KNOT on Amazon Marketplace
<http://www.amazon.co.uk/gp/product/B004VMC9UM>. They don't seem to sell
them anymore, but I've used Prepaymania before (for HTC-branded accessories
for my old Hero) and they seem to only sell genuine branded accessories.
They all claim to output 5.0V at 0.7A (which I find odd, as regular USB only
guarantees 5.0V at 500mA, and the charging standard signaled by shorting the
data lines is supposed to guarantee upto 1A or 1.5A depending on the
standard you're reading; perhaps Samsung devices only draw <500mA when
connected to a regular USB port and 500mA when connected to a charger).

<https://motorola-global-portal.custhelp.com/app/answers/prod_answer_detail/a_id/97318/p/30,6720,9050/action/auth>
describes the Moto G charger specs; 5V at between 500mA to 1.5A (any more is
superfluous). The text suggests that the charging circuitry in the Moto G
is intelligent enough to reduce the current drawn if the voltage drops below
5V. Mine took about 1.5hrs to charge to 100% from 50%, so I estimate 3hrs
from flat. Given the Moto G's 2070 mAh battery, that suggests it draws the
maximum 700mA from my Samsung chargers.

> I also read that I could use a mains/usb plug PS and use the supplied
> cable.

That's how my OH's HTC charger is; a combination of UK 3-pin adaptor, a
generic SMPSU with USB A output, and a USB A to micro B cable. She's using
the cable that came with the charger rather than the one with the Moto G.

HTH,
Alex



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End of Bristol Digest, Vol 544, Issue 1
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