NOT original branded, ours is a Compatible Replacement only, but is 100% compatible non-OEM high quality power supply adapter. Car 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 Input : 12V - 24V worldwide Over Voltage Output Protection, Over Current Output Protection. Short Circuit Output Protection. Check battery : Rechargeable batteries don't last forever, on average, battery lasts 1 to 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. Premium Highplastic Quality Power Supply Adapter Charger.