The Velvetwire Powerslayer has built-in circuitry that detects when your device is fully charged and then cuts off the power.
Looking for the best products released at the Consumer Electronics Show this year? Here is the Best Tech at CES 2016 – The Best of Life Magazine
Another great idea in small, portable connectivity devices. This one can transfer data between computers and mobile devices (iOS, Android and Kindle) up to 8 devices simultaneously: The SanDisk Connect Wireless Flash Drive provides you with an easy and convenient way to wirelessly store, share and stream your content across your smartphones, tablets and computers. Allows you to share data across devices via Wi-Fi, even when no internet access is available. Available on Amazon for $50. =:^)