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10-31-2018, 09:44 PM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,298
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Quote:
Originally Posted by humptybump
(as Charlie said) for those planning to use the USB to power / charge an iPad, it requires 2.1A. I would not be surprised to find some of the Android tablets with a similar requirement
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In addition, I believe there is some circuitry that sends some output in order for the ipad to take the full 2.1A. Therefore, a simple regulated 5V supply won't get the ipad to take more than 1A, regardless of what is available.
EDIT: Oops, I see this is an old thread.
Larry
__________________
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
Last edited by lr172 : 10-31-2018 at 09:47 PM.
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10-31-2018, 09:54 PM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,298
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Quote:
Originally Posted by Deweyclawson
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If you read the reviews, you will see that this unit will not charge an Ipad at the rapid rate. I searched a lot and the only one that I could find that would do it was the Anker 2.4 unit but it plugs into cig lighter (ended up gluing into the lighter adapter, as it kept popping out due to vibrations). Even the modified Stein unit wouldn't rapid charge my ipad air 2, though they were noise free.
Larry
__________________
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
Last edited by lr172 : 10-31-2018 at 09:56 PM.
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11-01-2018, 04:59 AM
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Join Date: Jun 2014
Location: Enon Valley
Posts: 189
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priorities
In looking for a charger, keep in mind that the charging function is probably not the most important consideration. In my mind, There were four considerations in adding a usb port. In this order.
1. EMI - The first one I bought would wipe out the radios.
2. Size - I already had a round hole waiting to be filled.
3. Cost - $200+ seemed excessive. $24.95 much better.
4. Charge power -
I put power last because this is not a "charge station" but is a "power station". The idea being to provide power to the unit being used in flt so as to have it available for the entire flt. Arriving with the unit more charged than you started is a slight plus, but a much smaller consideration than the other 3 items.
Your mileage may vary.
__________________
Dewey Clawson
Super Sabre Society
2012 RV10; 1993 RV6A; 1947 Cessna 140, in progress
2019 dues exempt but paid anyhow
F100, A7D, A10, F16,
Fokker, Boeing, McDonnell-Douglas
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11-01-2018, 06:18 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Quote:
Originally Posted by lr172
If you read the reviews, you will see that this unit will not charge an Ipad at the rapid rate. I searched a lot and the only one that I could find that would do it was the Anker 2.4 unit but it plugs into cig lighter (ended up gluing into the lighter adapter, as it kept popping out due to vibrations). Even the modified Stein unit wouldn't rapid charge my ipad air 2, though they were noise free.
Larry
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There is one I have not installed yet. It is set up for the apple protocol. The information is not handy right now, but will send via email to you. It is a little bulky on the backside due to a heat sink, but has good documentation for it's performance. Small US manufacturer.
EDIT: http://www.commitlift.com Outstanding new presentation on this site, a 30 minute read.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
Last edited by BillL : 11-01-2018 at 06:32 AM.
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11-01-2018, 06:30 AM
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Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,645
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I tested a bunch of these ... I really wanted the simple look of this one:
(a) $5-$15ea - https://www.aircraftspruce.com/catal...alusbpanel.php
But the one that ultimately worked best and provided true 5A (2.4 per jack) consistently was this one:
(b) Blue Sea Systems - $45ea - https://www.steinair.com/product/dual-usb-panel-jack/
I tested by draining an iPad and iPad mini to dead and then plugged them both into the charger. "B" charged them both simultaneously as fast as the large Apple wall charger. "A" took hours and one of the iPads constantly dinged because it was loosing a connection. I did this 3 times for each charger, just started a test nightly before I went to bed.
I didn't stop there and really wanted the simple clean look of the "A" type chargers so I ordered a half dozen different brands, different sites. Some actually were different, however, most were just the same (Chinese?) unit repackaged and rebranded. All of them did the same thing in tests, the ones that worked anyway.
With a two place airplane and both people having smart phones and iPads, I extended the test by connecting two chargers to one 12V regulated source, 4 USB ports total.
The "A" units performed the same, horribly. After a few hours of constant disconnect "dinging" I just stopped the test.
The "B" units took whatever I threw at them like a champ, at one point having 2 dead iPhones, and 2 dead iPads sucking on them like a newborn, didn't skip a beat! The 100% charge times were within a few minutes of the solo test and they never even kicked the fan on from the power supply, highest draw was just over 10 amps as expected, average was around 4 amps.
The final test was all 4 devices playing video for an hour, surprised to say the chargers kept them at 95-100% power the entire time. I just stopped at an hour concluding that I was at that point just being excessive in my testing.
The "B" units (I purchased from SteinAir) just didn't have any issues at all. The bevel is larger and there is undesirable branding that I don't like, I doubt anyone but me would notice.
While very slow charging, most the other units did fine with just one device connected, but just one port at a time, the secondary port would simply drop to half an amp or lower.
Not scientific or exhaustive, but close enough, hope it helps!
__________________
RV-14A #140376
N196 (Flying)
2019 Bronze Lindy
Last edited by bkervaski : 11-01-2018 at 07:21 AM.
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11-01-2018, 07:09 AM
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Join Date: May 2011
Location: Roseville
Posts: 386
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Stein has them. Check his site www.steinair.com
David
__________________
RV-9A N435KR, Vans calendar March 2018
LIO 320 B1A, Dual LS Plasma III, AFP injection
G3x touch
Roseville, Ca
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11-01-2018, 07:21 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Quote:
Originally Posted by bkervaski
I tested a bunch of these ... I really wanted the simple look of this one:
(a) $5-$15ea - https://www.aircraftspruce.com/catal...alusbpanel.php
But the one that ultimately worked best and provided true 5A (2.4 per jack) consistently was this one:
(b) Blue Sea Systems - $45ea - https://www.steinair.com/product/dual-usb-panel-jack/
I tested by draining an iPad and iPad mini to dead and then plugged them both into the charger. "B" charged them both simultaneously as fast as the large Apple wall charger. "A" took hours and one of the iPads constantly dinged because it was loosing a connection. I did this 3 times for each charger, just started a test nightly before I went to bed.
I didn't stop there and really wanted the simple clean look of the "A" type chargers so I ordered a half dozen different brands, different sites. Some actually were different, however, most were just the same (Chinese?) unit repackaged and rebranded. All of them did the same thing in tests, the ones that worked anyway.
With a two place airplane and both people having smart phones and iPads, I extended the test by connecting two chargers to one 12V regulated source, 4 USB ports total.
The "A" units performed the same, horribly. After a few hours of constant disconnect "dinging" I just stopped the test.
The "B" units took whatever I threw at them like a champ, at one point having 2 dead iPhones, and 2 dead iPads sucking on them like a newborn, didn't skip a beat! The 100% charge times were within a few minutes of the solo test and they never even kicked the fan on from the power supply, highest draw was just over 10 amps as expected, average was around 4 amps.
The final test was all 4 devices playing video for an hour, surprised to say the chargers kept them at 95-100% power the entire time. I just stopped at an hour concluding that I was at that point just being excessive in my testing.
The "B" units (I purchased from SteinAir) just didn't have any issues at all. The bevel is larger and there is undesirable branding that I don't like, I doubt anyone but me would notice.
While very slow charging, most the other units did fine with just one device connected, but just one port at a time, the secondary port would simply drop to half an amp or lower.
Not scientific or exhaustive, but close enough, hope it helps!
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With all that work, you should be very entertained by this presentation.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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11-01-2018, 07:30 AM
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Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,645
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Quote:
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With all that work, you should be very entertained by this presentation.
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Wow, that's a great read, thanks!
My testing just kind of happened, wasn't really planned 
__________________
RV-14A #140376
N196 (Flying)
2019 Bronze Lindy
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11-01-2018, 07:51 AM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,298
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Quote:
Originally Posted by BillL
There is one I have not installed yet. It is set up for the apple protocol. The information is not handy right now, but will send via email to you. It is a little bulky on the backside due to a heat sink, but has good documentation for it's performance. Small US manufacturer.
EDIT: http://www.commitlift.com Outstanding new presentation on this site, a 30 minute read.
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Thanks Bill! I have been thinking about what to put in the 10 and would like a behind the panel setup, if I can find one that works.
Larry
__________________
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
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11-01-2018, 07:53 AM
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Join Date: Mar 2008
Location: houston, texas
Posts: 900
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Blue Water ports.
We found that the Blue Water ports are very good and compact units. They are very robust and there are two and three port 2.4 Amp units. You can find them on E-bay and don't have to go to Boat USA to get them. Just a thought. Yours, R.E.A. III # 80888
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