To address some of the technical inaccuracies mentioned...
The charger itself is built into the device, in this case the iStick.... the other part that you plug it into is just the USB power supply. Most USB power supplies show over rated amp outputs so if it says 2a, it may be under that amount depending on it's actual build quality. The actual charger will only take as many amps as it's designed for.... so a 1a charger will not charge any faster on a 2a or higher power supply ( as long as it really is a 2a that is ).
The USB 2 standard for power output is only 0.5a max... many USB ports on newer computers can output more than what the standard is set at but not all of them can, the USB ports on my computer as an example can handle up to 3.0a. Plugging in a poorly or cheaply designed device that can pull more amps than the USB port is rated for can ruin the USB port or even possibly the computer. Because of this, I never recommend to use the USB ports ( on computers ) to charge other devices not made to plug into a computer... just because it has a USB port on it, doesn't automatically mean it's safe for the computer.
Xtar makes a good quality USB 2.1a wall adapter... you can get one at Sun-Vapers.com and other places for around $10 USD
The batteries we use today aren't suppose to require conditioning... I still do it since there is no way to be certain because the manufacturers seldom tell us if they recommend it for theirs or not. All conditioning was used for was to neutralize the chemical they ( the manufacturers ) used to stabilize the battery while they were being stored in the warehouse and/or stores shelves so they would live longer... I prefer batteries that require it because of it extending the potential lifespan of the battery but enough other people disliked the need for it because they thought it too inconvenient... another example of peoples ignorance for why something was done a certain way and bitching about it anyway.