I want to purchase DeWalt 18V Cordless Drill/Driver from USA where electricity standard is 120V - 60Hz and use it in my country with transformer where standard is 220V-230V - 50Hz but there will be 10Hz of electricity frequency difference. Although people say differently, i would still like to know if such option is worthwhile given i save a lot of money.
What specifications must be transformer to fit cordless drill/driver and remain stable? What other things besides voltage should i take into account?