Did your original power adapter for your CZJUTAI battery charger stop working? This PK Power adapter is a direct replacement for model number JT-DC15V0.80A. It outputs 15 Volts at 0.8 Amps, which is the specific power your charger needs to operate safely and effectively. It's a Class 2 power supply, meaning it has built-in safety protections. Just plug it into the wall and connect it to your device—it should get you back up and running. We stand behind our products with solid customer service: you get a 30-day money-back guarantee, 60 days for a free exchange, and a full 360-day warranty for peace of mind. If you have any issues, just contact us through your Amazon account. Make sure to check that the connector tip size and polarity match your charger before ordering to ensure a perfect fit.