General Chat Thread, 16 Port USB Charging Hub For iPads And Other Apple Devices? in General; I don't know about other schools, but our bursar would never let us buy a $700 USB charging device from ...
27th January 2012, 02:58 PM #16
I don't know about other schools, but our bursar would never let us buy a $700 USB charging device from the U.S.A.
Surely there must be a company in the U.K. which sells chargers like the one posted by DaveP?
27th January 2012, 03:00 PM #17
Just bought in 2 sets of of the Classroom Solution from KRCS for an undisclosed school (not mine)
Sturdy stuff and charges & syncs. But lots of cash though, the case on its own from the quotes I remember were just over a grand.
27th January 2012, 03:15 PM #18
It's insane how much these things cost. Why are they so expensive?
Originally Posted by synaesthesia
27th January 2012, 03:18 PM #19
Loxit do a charge/sync trolley now aswell (16 or 32 unit versions available) Loxit Lapbank iPad Charge/Sync Trolley 16 | iPad Trolley | iPad Cart | Loxit, no idea on pricing though as am not interested enough to check up on it myself.
27th January 2012, 03:19 PM #20
Bretford do this:
PowerSync Tray for iPad | Apple Product Guide
No idea how much it is though.
27th January 2012, 03:22 PM #21
Looking at the originally posted product you are correct in that it doesn't appear to do sync as well however they do have products that fill that slot too
DS-IP Sync-and-Charge Kit
27th January 2012, 03:42 PM #22
Because these devices have to have some thought put into their design, and then someone has to manufacture them. If each iPad is drawing 2A as it charges, you can fit half a dozen of those on a standard 6-way power strip. Any more than that and you'll burn the fuse out, so anything that charges more than 6 devices at a time must be doing something a bit more cunning. If you're making anything in quanaties of less than, say, 10,000 it's not practical to set up a cheap production line in China, so you have to pay people to manufacture stuff for you more manually, which means you need cash for premisis and wages for 3 months before you start.
Originally Posted by Arthur
2 Thanks to dhicks:
Arthur (27th January 2012), plexer (27th January 2012)
27th January 2012, 03:50 PM #23
27th January 2012, 04:12 PM #24
The products made by Datamation as posted are powered by the Cambrionix tech from Cambridge
Depending on what the cost of that board is from Cambrionix it would be simple enough to have an enclosure fabricated.
2 Thanks to plexer:
Alis_Klar (19th September 2013), Arthur (27th January 2012)
27th January 2012, 04:27 PM #25
If you're planning on using it in a classroom, bear in mind it seems to need a 38A power supply.
Originally Posted by plexer
27th January 2012, 05:12 PM #26
Guess it would with the power requirements of 16 ipads all fast charging.
27th January 2012, 06:27 PM #27
If the aim is to charge devices overnight, then the idea might be to have something that can charge 6 devices at a time. A bunch of six-way mains adaptors connected to some kind of switchable adaptor controlled by an Ardunio or a Raspberry Pi should do it - just have it turn one bank on for a couple of hours, then the next and so on.
Originally Posted by plexer
30th January 2012, 11:10 AM #28
I believe that you're confusing Amps here. For example, ff you look at a typical laptop power supply, you will see a label showing two sets of figures, in and out, the one I'm using now shows:
Originally Posted by dhicks
Input - 100/240V at 1.5A
Output - 19V at 3.42A
It is the input Ampage figure that is relevant to the mains power supply. Typically a standard wall outlet is rated to supply 13A, so, I should safely be able to run 8 of such power supplies for a single socket (8 x 1.5 = 12 amps). Note, this is for a laptop which is capable of drawing enough power, not only to run and charge itself, but also to run several USB ports at the same time. You should check the figures on the power adapters you wish to use.
EDIT: Just found these figures for the genuine Apple iPad charger:
Input 100-240V 0.45A 50-60Hz
Output: 5.1V 2.3A
So, 28 of these could be run from a single 13A socket (28 x .45 = 12.6 Amps)....
Last edited by tonyd; 30th January 2012 at 12:12 PM.
2 Thanks to tonyd:
dhicks (30th January 2012), mac_shinobi (30th January 2012)
30th January 2012, 01:12 PM #29
Good point - you're right, that's 38A at 5V, not 240V. I imagine it'll need something a bit fancier than your average wall-wart style transformer, though.
Originally Posted by tonyd
13th March 2012, 04:55 PM #30
- Rep Power
The DS-IP-PP16 is a versatile and powerful charging device. It is extremely compact and can charge iPads and iPods and a bunch of other types of smart phones. If you don't have the room for three foot long power strips with block plug spacing, this product is ideal. iPad Charging: USB hub charges 16 iPads, iPods, iPhones
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