Our item fits Unique Model Only, it is very brand+model specific, please make sure that your device has the same model number in title.
Input voltage 100-240 VAC 50/60Hz worldwide
Build in Dynamic IC, Charger IC & Power fuse for rapid charging and over charge protection.
Battery lifespan (if your device has battery inside) : battery usually lasts 1-3 years. If battery is not functional, it will not store any electricity. It is not our charger's issue, please first use a voltmeter to check whether issue is related to battery or charger.