UpBright AC/DC Adapter Compatible with Dolphin KP380 KP-380 12V 5500mAh 66Wh 12VDC Lead Acid Battery WaveSync Triple 8" Portable Party Bluetooth Speaker Power Sound Karaoke Machine Supply Cord Charger - Dolphin KP380 KP-380 Power Supply

• World Wide Input Voltage 100-240VAC 50/60Hz OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Tested Units. In Great Working Condition. UpBright 30 days Refund. 24 Months Exchange. UpBright New Global AC / DC Adapter Compatible with Dolphin Model KP380 KP-380 12V 5500mAh 66Wh DC12V 5.5Ah 12 Volt 5500 mAh 12 Volts 5.5 Ah 12VDC Lead Acid Battery Pack WaveSync Triple 8" 8 Inch Portable Party Bluetooth Speaker Elite & Unique Power & Sound Karaoke Machine Class 2 Switching Power Supply Cord Cable PS Wall Home Charger Mains PSU ⚠️!!!Tips: 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. But not charger's problem. If you're not sure whether battery or charger is dead or not. You must have a volt meter in order to tell whether or not a charger is working.