About this item Replacement only, Not Original but 100% Compatible Brand New High Quality Power Supply Adapter. Please make sure that your model is listed in this listing, if your model is not listed here, please send us a question to confirm compatibility. Input : 100V – 240V worldwide Over Voltage output Protection, Over Current output Protection. Short Circuit output Protection. Please note: Rechargeable batteries don’t last forever, the average battery last 1 to 3 years. If the battery is old/dead, it will not accept a charge. This is not a charger’s problem. If you’re not sure whether battery or charger is dead or not, you must have a voltmeter to test a charger. If still unsure, please send us an Amazon message so that we can provide more help.