Using this charger is easy. Just connect it to your Norco EMTB's battery and then plug it into a power outlet. Make sure the power outlet is properly grounded. When charging, keep the charger in a well - ventilated area and avoid covering it. Don't expose the charger to water or high - humidity environments. For maintenance, clean the charger with a dry cloth regularly. If you notice any problems like strange noises or overheating during charging, stop using it immediately and contact customer service.