NOT original branded, ours is a Compatible Replacement only, ours is 100% compatible non-OEM high quality power supply adapter. AC adapter is very Brand-Model-Specific, please make sure that brand + model are listed in this listing, if your brand+model is not listed here, please send us a question to confirm compatibility. Worldwide Input : 100V - 240V Short Circuit Output Protection, Over Voltage Output Protection, Over Current Output Protection. Check battery : Rechargeable batteries don't last forever, on average, battery lasts 1-3 years. If the battery is dead/old, it will not accept any charge. This is not a charger's problem. If you're not sure whether battery is dead or not, you must use a voltmeter to test a charger. High Quality Power Supply Adapter Charger.