Meet the SLED system: a lighting solution for sledding at night that keeps you visible to others. It can be mounted to any sled and is powered by a rechargeable 2600 mAh battery. You get multiple light modes, including a warning light to alert others when there are problems.
SLED can also be used as a stroller or camping light. You can use its battery to charge your smartphone and other devices via a micro USB connection.[where to find it]