There’s not much to testing a product like this, but there are a few points that I’d like to make.
First off, the mCube charges fine. As it’s a high power (10W) USB port, it charges your USB device at a normal pace. The advantage here is that you can leave your laptop powered off. This is good as you don’t have to turn on your laptop, which would use excess power, if you just want to charge your USB device.
In terms of heat production the mCube does get warm, but not even remotely too hot to touch. I’ve experienced way hotter chargers that, if picked up, felt like they might burn a hole somewhere. In this industry, a cooler component has a prolonged life span, which is only good.
As a downside I’d like to note that there’s only one USB charger, so for this product to maintain an interesting position in comparison to a typical notebook charger, it has to retail for a reasonable price.
Pricing and Availability
Currently the mCube Slim 95 isn’t widely available yet, but will be in the near future. I’ve only found it at retailers from the USA, for at least $99,49 and up $117,58, and at Amazon.de for €99,99 (incl. Shipping). That said, it’s not yet really available in Europe yet and I learned that the suggested retail price is about €80.-, which is about the average of the USA prices (~$105.-)
This is quite an extreme price, considering that model-specific and universal chargers can be bought as cheaply as €15.-. It’s definitely hard to determine the quality of aftermarket chargers, but this doesn’t really count for model-specific chargers from your laptop’s manufacturer. On the other hand, this product is a keeper. By that I mean that you can keep it a long time, even if you buy a new laptop (brand). This certainly adds to the value of the mCube.