5000mA Universal Dual USB port power bank for iPad, iPhone, iPod, Mobile Phones
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5000mA Universal Dual USB Port Power Bank $21.93 Delivered
33
ChikenMiester on 08/08/2013 - 21:09 shoppingsquare.com.au (423 clicks)
Last edited 08/08/2013 - 21:49 by 1 other user
Last edited 08/08/2013 - 21:49 by 1 other user
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$21.93 including delivery
http://www.ebay.com.au/itm/5000mAh-2-USB-Wh-Portable-Externa…
No deal sorry.
Oh, and they are more like 1600MAH in reality. Can't trust the generic portable chargers unfortunately. I have one!
5000mah 3.6V is equal to 3600mAh 5v and you can expect 10% conversion loss so even if they are 100% truthful the best you can expect is 3200mAh 5V output.
good god - what is to neg? Is simple, basic electronics. P=IV
I am an electronic technician - i stated a simple fact, I made no value judgement on whether they were being misleading or otherwise, just made a simple calculation from the specified 3.6v 5000mAh battery.
That escalated fast.
expect is 3200mAh 5V
No, not even close. You won't even get a single full charge of an iphone with this.
These devices run on 18650 Lithium ion cells, whos ratings are notoriously over stated.
Here's an extreme example:
It's been a while since I've done electronics but mAh isn't a measure of power, but a measure of capacity. Where it can sustain a current load of 3.2 Amp for 1 hour. of 1.6 Amp for 2 hours etc. The voltage should not affect the capacity according to your P = VI…
busted, thanks ash2000
I have 2S 7.4v 5000mAh LiPo batteres here for radio controlled cars, and they are massive. There is no way this thing is 5000mAh. Hell, even the 2200mAh batteries i have are bigger than this.
Oh, and it's from shoppingsquare… nuf said :/
you realise that being 3.7v 5000mAh is the same capacity as 2500mAH 7.V - both are 18.5Wh or 66,600J
5000mAh 7.4V should be double the size as it requires exactly double the cells.Now you're just showing off ;)
U=RI, where U is the Voltage, R is the resistance and I is the current.
or PV = n*R.T …..
got Lepow 6000mAh from ebay. manufacturer said it had 85% efficiency, so I would get about 5000mAh. charged my 2500mAh S4 only got 50% before Lepow run out of life. so in reality from 6000mAh only had 1250mAh. still got full refund
I have one too. Not too shabby, paid about $40 a year ago, it's comparable to the Energizer XP 4000.
Can recharge a Nexus phone about 2 times and a bit :-)Not really a good price for something like this with no Safety Certification.
If one wanted to take the risks (safety, and unknown 'true' capacity) one could get a 'cheapie' via eBay.
EDIT
Oh, sorry, I see that Ash2000 already pointed out a 'cheapie' on eBay. (Reading and posting from an iPhone).Reading and posting from iPhone? Nuf said… Lol
I know! Typical iphone user needing to announce to the world that they have an iPhone :-)
I bought a 12000mAH charger for only $9.99. This deal is not even close to average value. Pretty crap really.
Can you provide some details?
Link, Performance, etc
I bought a 780'000 mAH battery pack for $199. That is ~4000mAH per 1$. Try to beat that.
Size? Don't need to worry, as I always keep it in the car.Easier and cost less to have a cig-lighter car charger in the car.
only 1a output :(
btw some aldi stores still stock power banks :)
http://www.ozbargain.com.au/node/102770
http://www.ozbargain.com.au/node/102637
I picked up 2 of the ALDI 7400Mah for $20 each recently
I can charge my Nexus 4 twice (almost) off each one.
Charges my ipad mini but slowly
Price in title please