DSTE EN-EL9 EN-EL9A DC15 Travel Charger Kit for Nikon D40 D40X D60 D3000 D5000 Digital Camera Battery as MH-23 Worldwide voltage Input: AC 110-240V 50/60Hz A 12V Car Lighter Adapter Convenient for Journey Built in battery protection and fault detection, will automatically stop when the charging is complete Build in MCU, automatically stop working when improper input voltage, short circuit or overheat Build in trickle charge IC, prevent the batteries from over-charged.