This is Replacement third party AC Power Adapter,it is not original/genuine AC Power Adapter. it perfect compatible original AC Power Adapter 100%.it easy to carry for traveling.it is Intelligent, when finished the charge, will stop automatic. BTBAI DMW-BLJ31 Battery Charger AC/DC Single for dmwblj31 dmw-blj31e dmwblj31e dc-s1 dc-s1r dc-s1h lumix s1 s1r s1h Digital Camera .