If you have a desktop device that is forever in need of fresh batteries, this clever hack will convert your battery-powered device to a USB-powered one with little effort.
Mar Bog was sick of replacing the batteries on his power-hungry Magic Trackpad. He stripped a USB cable and fit the ground and hot wires to corresponding negative and positive poles on a battery-sized dowel rod — seen in the screenshot above. He popped it back in his Magic Trackpad and now it runs off USB power.
While we're quite impressed with the simplicity of this hack, we'd suggest you proceed with caution before just slapping in a home-made USB battery in all your peripherals. Before installing your dowel USB battery in anything you'll need to ensure that the device has a built in regulator or that you've put proper amount of diodes/resisters on the cable to lower the voltage. You can read more about hacking USB cables for power in a guide we previously shared, how to create your own USB-powered gadgets.
Have a DIY hack to share? Let's hear about it in the comments.