Using this car charger is super easy. Just plug it into your car's 12 - Volt or 24 - Volt lighter socket. Then, connect your smartphone, tablet, iPhone, iPad, or iPod to the charger with your own charging lead (which is not included). When using, make sure your car's engine is running or the power is on. Don't expose the charger to extreme temperatures, like leaving it in a very hot or cold car for a long time. Also, keep it away from water and moisture. To maintain it, you can use a dry cloth to wipe it clean every once in a while. If you notice any damage, stop using it right away and contact the supplier. Enjoy fast and reliable charging on the go with this great car charger!