Performance -
With a device like the Wi-Drive the one thing that will make or break it (beside cost) is ease of use. Well the Wi-Drive certainly has that. After I was done tinkering with it I passed this around to other people to try out. Without exception everyone was able to get connected (even multiple people) and use the Wi-Drive without a single problem. The only issue that was reported was a minor problem connecting to a 3G wireless device. This issue later turned out to be nothing more than signal strength (even though the device showed two bars there was no 3G data connection. The quality of the streaming audio and video was also very good (as long as it was the correct format).
Battery Life -
The battery on the Wi-Drive lasted a little over 3 hours at 80 degrees F ambient temperature. When the temp went up (we ran it our doors at 90+) the life dropped seeing around 2.5 hours at that temperature. This is not that bad in reality but could be better. The idle battery life was around 6 hours if you are not doing anything with it (not even connected).
Heat Buildup -
This was a concern of ours. During usage the Wi-Drive gets hot very quickly. Although if you have it in a cool ventilated place it does not seem to be an issue, if you take it out in sunlight or where the temperature is high (like camping or the beach) then it does have a slight effect on performance. The one item we noted was that when the temperatures were over 90F we had to reconnect to the Wi-Drive at random intervals. This was usually when we were moving between items (like changing from a one video to another). As such we would not recommend using this in those types of temperatures. We also want to point out that this issue could have been related to the iPad as its thermal threshold is not that great either.