Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




312 posts

Ultimate Geek
+1 received by user: 6


Topic # 101458 2-May-2012 11:33
Send private message

Looking for technical assistance!  Friend has an old Motorola W156 (c2007 ish?) and wants a charger for it.  I have one at home from my old Okta Touch.  Both are physically mini-USB chargers and both charging specs seems to suit around 5V 900mA output.  So the question is - are they electronically compatible?

I had a sneaking feeling that where charging was concerned some earlier phones from different manufactruers might apply different voltages to different pins in the USB arrangement.  Is this true?  Any help appreciated - don't want to blow her phone up unnecessarily :-)





"It is useless to attempt to reason a man out of what he was never reasoned into."
— most commonly attributed to Jonathan Swift, author/theologian

Create new topic
6039 posts

Uber Geek
+1 received by user: 157

Trusted

  Reply # 618282 2-May-2012 11:56
Send private message

Hi Tony, all USB chargers simply provide 5V at some current limit, the variance of which may alter charge times etc but not much else.

What did used to happen before the manufacturers settled on a global phone charging USB based system is have varying sense resistor values that are used to tell the charger to start delivery of current, hence some older phone/charger combinations wont work together, all more recent devices that comply with the standard dont suffer this inconvenience.

So you cannot do damage to try other chargers, but take the risk of the phone not triggering current delivery in which case it would fail to charge or do anything useful.

Cyril

Edit, I should note we did have a Motorola Razar from that erra, and yes it had this problem, I note newer Motorolas have come into line with the standard, as one would expect.





312 posts

Ultimate Geek
+1 received by user: 6


  Reply # 618314 2-May-2012 12:52
Send private message

Thanks S.  I'll give it a bash tomorrow.  Its for the same person you did the FV install for a while back - I seem to be her fallback technology advisor (who, in turn, needs the occasional bit of expert assistance)!!





"It is useless to attempt to reason a man out of what he was never reasoned into."
— most commonly attributed to Jonathan Swift, author/theologian

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

From small to medium and beyond: Navigating the ERP battlefield
Posted 21-Nov-2017 21:12


Business owners: ERP software selection starts (and finishes) with you
Posted 21-Nov-2017 21:11


Why I'm not an early adopter
Posted 21-Nov-2017 10:39


Netatmo launches smart home products in New Zealand
Posted 20-Nov-2017 20:06


Huawei Mate 10: Punchy, long battery life, artificial intelligence
Posted 20-Nov-2017 16:30


Propel launch Disney Star Wars Laser Battle Drones
Posted 19-Nov-2017 21:26


UFB killer app: Speed
Posted 17-Nov-2017 17:01


The case for RSS — MacSparky
Posted 13-Nov-2017 14:35


WordPress and Indieweb: Take control of your online presence — 6:30 GridAKL Nov 30
Posted 11-Nov-2017 13:43


Chorus reveals technology upgrade for schools, students
Posted 10-Nov-2017 10:28


Vodafone says Internet of Things (IoT) crucial for digital transformation
Posted 10-Nov-2017 10:06


Police and Facebook launch AMBER Alerts system in NZ
Posted 9-Nov-2017 10:49


Amazon debuts Fire TV Stick Basic Edition in over 100 new countries
Posted 8-Nov-2017 05:34


Vodafone VoIP transition to start this month
Posted 7-Nov-2017 12:33


Spark enhances IoT network capability
Posted 7-Nov-2017 11:33



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.