It looks like a battery bank, but it has a graphene supercapacitor instead of a LiIon battery!
Here is the comparison.
|Charging bank from socket||5min||Several Hours|
|Number of cycles||>10000||<1000|
|Capacity drop in time||very low||happens sooner or later|
|Temperature tolerance||works fine||loses capacity|
|Deep discharge tolerance||no problem||can damage battery|
|Charging phone time||Normal||Normal|
|Capacity||~1500mAh||>3000mAh (for this size)|
Charging bank from socket - the main advantage of the Zap&Go is that the supercapacitor can charge quickly, with good electronics to control the charge. Bear in mind that for this fast charge your socket should be able to provide over 3KW of power. i.e not suitable for shaver sockets!
Number of cycles - normal power banks have LiIon batteries which are limited to several hundred cycles of charge/discharge. Low quality batteries barely reach 100-200. Supercapacitors should have practically unlimited number of cycles. And their capacity drops very slowly in time. This is good, because you're going to charge your Zap&Go more often than a normal Power bank.
Capacity drop in time - normal LiIon batteries drop capacity in time, sooner or later, and after a few years the power bank becomes useless. In time they hold less and less charge. Supercaps have lower effect, they can drop 10% for several years. I personally have several second hand supercaps, and they all work flawlessly.
Temperature tolerance - Supercapacitors are not affected much between +60 and -20 degrees Celsius. Unlike other power banks where batteries lose capacity and/or discharge when it is too hot or cold
Deep discharge tolerance - Supercapacitors have no problems if you discharge them even to 0 volts. Rechargeable batteries, however, can reach a "point of no return" - a voltage so low, that the battery cannot be charged/used again. Usually power banks have protection for that, but if you leave your power bank discharged on the shelf for several months, it can die.
Charging the phone - Zap&Go or any other charger does not affect your phone charging speed. The electronics in the phone control the charge, no matter the power bank and/or adapter! Yes sometimes phones/tablets can recognize fast or normal charger, but Zap&Go is able to deliver the highest speed, because it is discharging the capacitor, not a battery (to charge your phone), thus charging/discharging power can be high.
Self-discharge - self-discharge is the effect of discharging a charged battery just by staying on the shelf. Usually supercaps self-discarge for several days only, while some batteries can hold for a year. In this case the manufacturer states 20% loss of power for 72 hours, which is pretty good!
Price - the price is very high! End of story! Probably it is normal for something so new on the market. I pre-ordered mine for 99$ from Indiegogo. I am also sure that the price will drop in time.
Capacity - capacity of the Zap&Go is low. Although it is enough for charging most phones on the market. Probably in the future, they will have bigger capacitors. I wish them most of success!
Please bear in mind that the information above might be incorrect. I do not represent the manufacturer, and just quote my own knowledge.
I am sorry for writing this blog so late. Indiegogo campaign finished, and you can preorder the device now for 150$ , instead of 99$. The campaign was more than successful - 382% ($30,000 asked, $114,546 received)
I hope next year I will have my device, and will be able to write a review. I am very excited about this new technology.The USB port can be used also for a big variety of applications.
Indiegogo campaign: http://www.indiegogo.com/projects/zap-go-first-graphene-supercapacitor-charger/x/5047817
Zap&Go web site: http://www.zapandgocharger.com/