There are a few things you need to do in order to charge your Vaultek safe. First, make sure that the power cord is properly plugged into the back of the safe. Next, locate the charging port on the side of the safe and insert the provided charging cable. Finally, plug the other end of the cable into a power outlet. Once everything is properly connected, your safe will begin charging. Depending on the size of your safe, it may take several hours to fully charge. However, once it is charged, you will be able to use it for an extended period of time without having to worry about recharging it again. Thanks for choosing Vaultek!