Universal Smart Charger means it will work in countries where the power is 110v or 240v. It will charge 4AA or AAA rechargeable batteries only. It comes with two plugs, one for home (AC) outlet and another for auto, motor home (DC) outlets. This works great with our battery operated pepper mill. This set up will save you money on batteries for all your other devices in your home. Never put regular batteries in charger.