If you’re riding with a light system that includes a battery power you could have an extra way to give your phone the juice it might need. This is the concept behind Sigma Sport’s IICON cable that allows users to power up their mobile phones, cameras and GPS units via the battery pack.
The IICON attaches to the IION/IION XL battery pack and a red LED indicator light shows that the device is being charged. The IICON is completely watertight for use even in damp conditions. Now this is still a robbing Peter to pay Paul type situation, especially if you need to ride home and actually need the light but sometimes being able to make that call can be a godsend!