how to connect 12 12v batteries to make 48v

How do you connect 1212V battery to create 48V? You can connect them in series, but you must make sure that each battery has the same capacity. A higher capacity battery will be charged by a lower one and vice-versa. Also, remember that the positive and negative terminals should not cross. Short circuits can be hazardous and cause severe injuries. These are some ways to make sure the process runs smoothly.